./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix000.oepc.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix000.oepc.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix000.oepc.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix000.oepc.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 02:48:19,737 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 02:48:19,815 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 02:48:19,820 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 02:48:19,820 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 02:48:19,848 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 02:48:19,849 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 02:48:19,849 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 02:48:19,850 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 02:48:19,853 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 02:48:19,854 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 02:48:19,854 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 02:48:19,855 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 02:48:19,856 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 02:48:19,857 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 02:48:19,857 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 02:48:19,857 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 02:48:19,857 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 02:48:19,858 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 02:48:19,858 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 02:48:19,858 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 02:48:19,859 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 02:48:19,859 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 02:48:19,859 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 02:48:19,860 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 02:48:19,860 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 02:48:19,860 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 02:48:19,860 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 02:48:19,861 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 02:48:19,861 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 02:48:19,862 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 02:48:19,863 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 02:48:19,863 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 02:48:19,863 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 02:48:19,863 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 02:48:19,864 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 02:48:19,864 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 02:48:19,864 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 02:48:19,864 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 02:48:19,864 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 02:48:19,865 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 02:48:19,865 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 02:48:19,865 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 02:48:19,865 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 02:48:20,134 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 02:48:20,159 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 02:48:20,161 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 02:48:20,162 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 02:48:20,163 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 02:48:20,164 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix000.oepc.i [2024-06-28 02:48:21,307 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 02:48:21,601 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 02:48:21,601 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix000.oepc.i [2024-06-28 02:48:21,616 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78f5cb70b/8ba8187fe789405e94607c198f46e1ae/FLAG81794b546 [2024-06-28 02:48:21,629 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/78f5cb70b/8ba8187fe789405e94607c198f46e1ae [2024-06-28 02:48:21,631 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 02:48:21,631 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 02:48:21,632 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix000.oepc.yml/witness.yml [2024-06-28 02:48:21,796 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 02:48:21,798 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 02:48:21,799 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 02:48:21,799 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 02:48:21,803 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 02:48:21,804 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 02:48:21" (1/2) ... [2024-06-28 02:48:21,805 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@534c26c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:48:21, skipping insertion in model container [2024-06-28 02:48:21,806 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 02:48:21" (1/2) ... [2024-06-28 02:48:21,807 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3540b8e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 02:48:21, skipping insertion in model container [2024-06-28 02:48:21,808 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:48:21" (2/2) ... [2024-06-28 02:48:21,808 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@534c26c7 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:48:21, skipping insertion in model container [2024-06-28 02:48:21,808 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:48:21" (2/2) ... [2024-06-28 02:48:21,809 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 02:48:21,878 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 02:48:21,880 INFO L97 edCorrectnessWitness]: Location invariant before [L835-L835] ((((((((((((((((! multithreaded || y$r_buff1_thd2 == (_Bool)0) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || ((((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (y$mem_tmp == 0 || y$mem_tmp == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0) [2024-06-28 02:48:21,880 INFO L97 edCorrectnessWitness]: Location invariant before [L834-L834] ((((((((((((((((! multithreaded || y$r_buff1_thd2 == (_Bool)0) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || ((((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd2 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd2 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1)) && (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1)) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (x == 0 || x == 1)) && (y == 0 || y == 1)) && (y$mem_tmp == 0 || y$mem_tmp == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 1)) && (y$w_buff1 == 0 || y$w_buff1 == 1)))) && (! multithreaded || y$r_buff0_thd2 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || (__unbuffered_p0_EBX == 0 || __unbuffered_p0_EBX == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0) [2024-06-28 02:48:21,880 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 02:48:21,881 INFO L106 edCorrectnessWitness]: ghost_update [L832-L832] multithreaded = 1; [2024-06-28 02:48:21,929 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 02:48:22,359 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 02:48:22,369 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 02:48:22,539 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 02:48:22,586 INFO L206 MainTranslator]: Completed translation [2024-06-28 02:48:22,588 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:48:22 WrapperNode [2024-06-28 02:48:22,588 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 02:48:22,590 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 02:48:22,590 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 02:48:22,590 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 02:48:22,598 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:48:22" (1/1) ... [2024-06-28 02:48:22,624 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:48:22" (1/1) ... [2024-06-28 02:48:22,663 INFO L138 Inliner]: procedures = 174, calls = 38, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 137 [2024-06-28 02:48:22,664 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 02:48:22,665 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 02:48:22,665 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 02:48:22,665 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 02:48:22,679 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:48:22" (1/1) ... [2024-06-28 02:48:22,679 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:48:22" (1/1) ... [2024-06-28 02:48:22,684 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:48:22" (1/1) ... [2024-06-28 02:48:22,712 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-28 02:48:22,712 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:48:22" (1/1) ... [2024-06-28 02:48:22,712 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:48:22" (1/1) ... [2024-06-28 02:48:22,721 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:48:22" (1/1) ... [2024-06-28 02:48:22,723 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:48:22" (1/1) ... [2024-06-28 02:48:22,725 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:48:22" (1/1) ... [2024-06-28 02:48:22,726 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:48:22" (1/1) ... [2024-06-28 02:48:22,730 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 02:48:22,731 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 02:48:22,731 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 02:48:22,731 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 02:48:22,732 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:48:22" (1/1) ... [2024-06-28 02:48:22,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 02:48:22,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 02:48:22,766 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-28 02:48:22,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-28 02:48:22,814 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 02:48:22,814 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 02:48:22,814 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 02:48:22,815 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 02:48:22,815 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 02:48:22,815 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 02:48:22,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 02:48:22,816 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 02:48:22,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 02:48:22,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 02:48:22,817 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 02:48:22,975 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 02:48:22,977 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 02:48:23,256 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 02:48:23,257 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 02:48:23,437 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 02:48:23,437 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 02:48:23,440 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 02:48:23 BoogieIcfgContainer [2024-06-28 02:48:23,440 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 02:48:23,443 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 02:48:23,443 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 02:48:23,446 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 02:48:23,446 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 02:48:21" (1/4) ... [2024-06-28 02:48:23,447 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10a8abeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 02:48:23, skipping insertion in model container [2024-06-28 02:48:23,447 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 02:48:21" (2/4) ... [2024-06-28 02:48:23,448 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10a8abeb and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 02:48:23, skipping insertion in model container [2024-06-28 02:48:23,449 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 02:48:22" (3/4) ... [2024-06-28 02:48:23,449 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10a8abeb and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 02:48:23, skipping insertion in model container [2024-06-28 02:48:23,452 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 02:48:23" (4/4) ... [2024-06-28 02:48:23,453 INFO L112 eAbstractionObserver]: Analyzing ICFG mix000.oepc.i [2024-06-28 02:48:23,470 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 02:48:23,470 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-28 02:48:23,470 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 02:48:23,551 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 02:48:23,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 31 transitions, 70 flow [2024-06-28 02:48:23,613 INFO L124 PetriNetUnfolderBase]: 0/29 cut-off events. [2024-06-28 02:48:23,613 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 02:48:23,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 29 events. 0/29 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 43 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 02:48:23,616 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 31 transitions, 70 flow [2024-06-28 02:48:23,619 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 23 transitions, 52 flow [2024-06-28 02:48:23,633 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 02:48:23,640 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6a5b793d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 02:48:23,641 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-28 02:48:23,645 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 02:48:23,645 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2024-06-28 02:48:23,646 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 02:48:23,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:48:23,647 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 02:48:23,647 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:48:23,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:48:23,678 INFO L85 PathProgramCache]: Analyzing trace with hash 368677949, now seen corresponding path program 1 times [2024-06-28 02:48:23,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:48:23,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794590616] [2024-06-28 02:48:23,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:48:23,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:48:23,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:48:24,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:48:24,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:48:24,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794590616] [2024-06-28 02:48:24,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794590616] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:48:24,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:48:24,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 02:48:24,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712098146] [2024-06-28 02:48:24,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:48:24,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 02:48:24,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:48:24,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 02:48:24,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 02:48:24,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 31 [2024-06-28 02:48:24,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 52 flow. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:24,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:48:24,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 31 [2024-06-28 02:48:24,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:48:24,960 INFO L124 PetriNetUnfolderBase]: 162/309 cut-off events. [2024-06-28 02:48:24,960 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-28 02:48:24,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 620 conditions, 309 events. 162/309 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1182 event pairs, 97 based on Foata normal form. 1/302 useless extension candidates. Maximal degree in co-relation 609. Up to 288 conditions per place. [2024-06-28 02:48:24,965 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 21 selfloop transitions, 3 changer transitions 0/29 dead transitions. [2024-06-28 02:48:24,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 29 transitions, 115 flow [2024-06-28 02:48:24,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 02:48:24,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 02:48:24,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 56 transitions. [2024-06-28 02:48:24,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6021505376344086 [2024-06-28 02:48:24,978 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 52 flow. Second operand 3 states and 56 transitions. [2024-06-28 02:48:24,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 29 transitions, 115 flow [2024-06-28 02:48:24,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 112 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 02:48:24,982 INFO L231 Difference]: Finished difference. Result has 31 places, 25 transitions, 71 flow [2024-06-28 02:48:24,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=71, PETRI_PLACES=31, PETRI_TRANSITIONS=25} [2024-06-28 02:48:24,987 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2024-06-28 02:48:24,987 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 25 transitions, 71 flow [2024-06-28 02:48:24,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:24,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:48:24,988 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:48:24,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 02:48:24,988 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:48:24,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:48:24,989 INFO L85 PathProgramCache]: Analyzing trace with hash 2112218588, now seen corresponding path program 1 times [2024-06-28 02:48:24,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:48:24,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180927482] [2024-06-28 02:48:24,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:48:24,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:48:25,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:48:25,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:48:25,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:48:25,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180927482] [2024-06-28 02:48:25,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180927482] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:48:25,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:48:25,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 02:48:25,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343388625] [2024-06-28 02:48:25,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:48:25,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 02:48:25,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:48:25,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 02:48:25,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-06-28 02:48:25,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 31 [2024-06-28 02:48:25,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 25 transitions, 71 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:25,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:48:25,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 31 [2024-06-28 02:48:25,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:48:25,746 INFO L124 PetriNetUnfolderBase]: 159/306 cut-off events. [2024-06-28 02:48:25,746 INFO L125 PetriNetUnfolderBase]: For 60/60 co-relation queries the response was YES. [2024-06-28 02:48:25,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 694 conditions, 306 events. 159/306 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1173 event pairs, 79 based on Foata normal form. 2/306 useless extension candidates. Maximal degree in co-relation 682. Up to 274 conditions per place. [2024-06-28 02:48:25,752 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 25 selfloop transitions, 5 changer transitions 0/35 dead transitions. [2024-06-28 02:48:25,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 35 transitions, 157 flow [2024-06-28 02:48:25,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 02:48:25,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 02:48:25,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 72 transitions. [2024-06-28 02:48:25,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5806451612903226 [2024-06-28 02:48:25,756 INFO L175 Difference]: Start difference. First operand has 31 places, 25 transitions, 71 flow. Second operand 4 states and 72 transitions. [2024-06-28 02:48:25,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 35 transitions, 157 flow [2024-06-28 02:48:25,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 35 transitions, 154 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 02:48:25,761 INFO L231 Difference]: Finished difference. Result has 34 places, 27 transitions, 95 flow [2024-06-28 02:48:25,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=95, PETRI_PLACES=34, PETRI_TRANSITIONS=27} [2024-06-28 02:48:25,762 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 4 predicate places. [2024-06-28 02:48:25,762 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 27 transitions, 95 flow [2024-06-28 02:48:25,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:25,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:48:25,763 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:48:25,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 02:48:25,764 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:48:25,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:48:25,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1054267720, now seen corresponding path program 1 times [2024-06-28 02:48:25,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:48:25,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617596813] [2024-06-28 02:48:25,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:48:25,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:48:25,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:48:26,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:48:26,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:48:26,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617596813] [2024-06-28 02:48:26,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617596813] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:48:26,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:48:26,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 02:48:26,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364953424] [2024-06-28 02:48:26,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:48:26,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 02:48:26,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:48:26,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 02:48:26,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-06-28 02:48:26,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 31 [2024-06-28 02:48:26,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 95 flow. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:26,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:48:26,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 31 [2024-06-28 02:48:26,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:48:27,082 INFO L124 PetriNetUnfolderBase]: 153/300 cut-off events. [2024-06-28 02:48:27,082 INFO L125 PetriNetUnfolderBase]: For 174/174 co-relation queries the response was YES. [2024-06-28 02:48:27,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 747 conditions, 300 events. 153/300 cut-off events. For 174/174 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1128 event pairs, 43 based on Foata normal form. 4/302 useless extension candidates. Maximal degree in co-relation 733. Up to 246 conditions per place. [2024-06-28 02:48:27,085 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 30 selfloop transitions, 7 changer transitions 0/42 dead transitions. [2024-06-28 02:48:27,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 42 transitions, 209 flow [2024-06-28 02:48:27,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:48:27,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:48:27,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 89 transitions. [2024-06-28 02:48:27,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5741935483870968 [2024-06-28 02:48:27,090 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 95 flow. Second operand 5 states and 89 transitions. [2024-06-28 02:48:27,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 42 transitions, 209 flow [2024-06-28 02:48:27,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 42 transitions, 200 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-28 02:48:27,093 INFO L231 Difference]: Finished difference. Result has 37 places, 29 transitions, 119 flow [2024-06-28 02:48:27,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=119, PETRI_PLACES=37, PETRI_TRANSITIONS=29} [2024-06-28 02:48:27,095 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 7 predicate places. [2024-06-28 02:48:27,095 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 29 transitions, 119 flow [2024-06-28 02:48:27,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:27,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:48:27,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:48:27,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 02:48:27,096 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:48:27,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:48:27,097 INFO L85 PathProgramCache]: Analyzing trace with hash -905032760, now seen corresponding path program 1 times [2024-06-28 02:48:27,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:48:27,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926878976] [2024-06-28 02:48:27,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:48:27,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:48:27,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:48:27,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:48:27,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:48:27,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926878976] [2024-06-28 02:48:27,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926878976] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:48:27,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:48:27,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 02:48:27,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328121028] [2024-06-28 02:48:27,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:48:27,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 02:48:27,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:48:27,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 02:48:27,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-06-28 02:48:27,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:48:27,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 29 transitions, 119 flow. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:27,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:48:27,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:48:27,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:48:28,010 INFO L124 PetriNetUnfolderBase]: 211/379 cut-off events. [2024-06-28 02:48:28,011 INFO L125 PetriNetUnfolderBase]: For 353/353 co-relation queries the response was YES. [2024-06-28 02:48:28,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1053 conditions, 379 events. 211/379 cut-off events. For 353/353 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1339 event pairs, 92 based on Foata normal form. 1/378 useless extension candidates. Maximal degree in co-relation 1037. Up to 368 conditions per place. [2024-06-28 02:48:28,013 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 28 selfloop transitions, 6 changer transitions 0/36 dead transitions. [2024-06-28 02:48:28,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 36 transitions, 205 flow [2024-06-28 02:48:28,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 02:48:28,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 02:48:28,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 61 transitions. [2024-06-28 02:48:28,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3935483870967742 [2024-06-28 02:48:28,015 INFO L175 Difference]: Start difference. First operand has 37 places, 29 transitions, 119 flow. Second operand 5 states and 61 transitions. [2024-06-28 02:48:28,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 36 transitions, 205 flow [2024-06-28 02:48:28,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 36 transitions, 190 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-28 02:48:28,017 INFO L231 Difference]: Finished difference. Result has 39 places, 31 transitions, 131 flow [2024-06-28 02:48:28,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=131, PETRI_PLACES=39, PETRI_TRANSITIONS=31} [2024-06-28 02:48:28,018 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 9 predicate places. [2024-06-28 02:48:28,019 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 31 transitions, 131 flow [2024-06-28 02:48:28,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:28,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:48:28,019 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:48:28,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 02:48:28,020 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:48:28,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:48:28,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1405231846, now seen corresponding path program 1 times [2024-06-28 02:48:28,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:48:28,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437051671] [2024-06-28 02:48:28,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:48:28,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:48:28,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:48:29,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:48:29,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:48:29,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437051671] [2024-06-28 02:48:29,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437051671] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:48:29,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:48:29,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:48:29,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787881164] [2024-06-28 02:48:29,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:48:29,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:48:29,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:48:29,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:48:29,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:48:29,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-28 02:48:29,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 31 transitions, 131 flow. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:29,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:48:29,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-28 02:48:29,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:48:30,158 INFO L124 PetriNetUnfolderBase]: 190/354 cut-off events. [2024-06-28 02:48:30,158 INFO L125 PetriNetUnfolderBase]: For 526/526 co-relation queries the response was YES. [2024-06-28 02:48:30,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1019 conditions, 354 events. 190/354 cut-off events. For 526/526 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1260 event pairs, 34 based on Foata normal form. 4/356 useless extension candidates. Maximal degree in co-relation 1002. Up to 272 conditions per place. [2024-06-28 02:48:30,160 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 39 selfloop transitions, 12 changer transitions 0/56 dead transitions. [2024-06-28 02:48:30,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 56 transitions, 291 flow [2024-06-28 02:48:30,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:48:30,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:48:30,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 124 transitions. [2024-06-28 02:48:30,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-28 02:48:30,162 INFO L175 Difference]: Start difference. First operand has 39 places, 31 transitions, 131 flow. Second operand 8 states and 124 transitions. [2024-06-28 02:48:30,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 56 transitions, 291 flow [2024-06-28 02:48:30,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 56 transitions, 280 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-28 02:48:30,165 INFO L231 Difference]: Finished difference. Result has 45 places, 34 transitions, 162 flow [2024-06-28 02:48:30,165 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=162, PETRI_PLACES=45, PETRI_TRANSITIONS=34} [2024-06-28 02:48:30,166 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 15 predicate places. [2024-06-28 02:48:30,166 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 34 transitions, 162 flow [2024-06-28 02:48:30,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:30,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:48:30,167 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:48:30,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 02:48:30,167 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:48:30,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:48:30,167 INFO L85 PathProgramCache]: Analyzing trace with hash 2008756451, now seen corresponding path program 1 times [2024-06-28 02:48:30,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:48:30,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906209157] [2024-06-28 02:48:30,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:48:30,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:48:30,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:48:30,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:48:30,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:48:30,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906209157] [2024-06-28 02:48:30,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906209157] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:48:30,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:48:30,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:48:30,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951307530] [2024-06-28 02:48:30,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:48:30,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:48:30,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:48:30,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:48:30,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:48:30,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:48:30,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 34 transitions, 162 flow. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:30,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:48:30,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:48:30,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:48:31,118 INFO L124 PetriNetUnfolderBase]: 201/362 cut-off events. [2024-06-28 02:48:31,119 INFO L125 PetriNetUnfolderBase]: For 703/703 co-relation queries the response was YES. [2024-06-28 02:48:31,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1164 conditions, 362 events. 201/362 cut-off events. For 703/703 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1232 event pairs, 49 based on Foata normal form. 3/363 useless extension candidates. Maximal degree in co-relation 1144. Up to 342 conditions per place. [2024-06-28 02:48:31,122 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 34 selfloop transitions, 8 changer transitions 0/44 dead transitions. [2024-06-28 02:48:31,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 44 transitions, 272 flow [2024-06-28 02:48:31,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:48:31,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:48:31,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 71 transitions. [2024-06-28 02:48:31,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3817204301075269 [2024-06-28 02:48:31,123 INFO L175 Difference]: Start difference. First operand has 45 places, 34 transitions, 162 flow. Second operand 6 states and 71 transitions. [2024-06-28 02:48:31,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 44 transitions, 272 flow [2024-06-28 02:48:31,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 44 transitions, 248 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-28 02:48:31,126 INFO L231 Difference]: Finished difference. Result has 47 places, 36 transitions, 171 flow [2024-06-28 02:48:31,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=171, PETRI_PLACES=47, PETRI_TRANSITIONS=36} [2024-06-28 02:48:31,127 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 17 predicate places. [2024-06-28 02:48:31,127 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 36 transitions, 171 flow [2024-06-28 02:48:31,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:31,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:48:31,127 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:48:31,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 02:48:31,128 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:48:31,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:48:31,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1294430037, now seen corresponding path program 1 times [2024-06-28 02:48:31,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:48:31,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194208445] [2024-06-28 02:48:31,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:48:31,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:48:31,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:48:31,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:48:31,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:48:31,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194208445] [2024-06-28 02:48:31,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194208445] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:48:31,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:48:31,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:48:31,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68265784] [2024-06-28 02:48:31,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:48:31,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:48:31,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:48:31,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:48:31,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:48:31,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:48:31,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 36 transitions, 171 flow. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:31,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:48:31,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:48:31,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:48:32,039 INFO L124 PetriNetUnfolderBase]: 213/383 cut-off events. [2024-06-28 02:48:32,039 INFO L125 PetriNetUnfolderBase]: For 900/900 co-relation queries the response was YES. [2024-06-28 02:48:32,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1286 conditions, 383 events. 213/383 cut-off events. For 900/900 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1313 event pairs, 50 based on Foata normal form. 1/382 useless extension candidates. Maximal degree in co-relation 1264. Up to 359 conditions per place. [2024-06-28 02:48:32,042 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 36 selfloop transitions, 13 changer transitions 0/51 dead transitions. [2024-06-28 02:48:32,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 51 transitions, 336 flow [2024-06-28 02:48:32,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:48:32,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:48:32,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 80 transitions. [2024-06-28 02:48:32,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3686635944700461 [2024-06-28 02:48:32,044 INFO L175 Difference]: Start difference. First operand has 47 places, 36 transitions, 171 flow. Second operand 7 states and 80 transitions. [2024-06-28 02:48:32,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 51 transitions, 336 flow [2024-06-28 02:48:32,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 51 transitions, 317 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-28 02:48:32,049 INFO L231 Difference]: Finished difference. Result has 52 places, 44 transitions, 239 flow [2024-06-28 02:48:32,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=239, PETRI_PLACES=52, PETRI_TRANSITIONS=44} [2024-06-28 02:48:32,050 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 22 predicate places. [2024-06-28 02:48:32,050 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 44 transitions, 239 flow [2024-06-28 02:48:32,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:32,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:48:32,051 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:48:32,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 02:48:32,051 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:48:32,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:48:32,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1265593527, now seen corresponding path program 2 times [2024-06-28 02:48:32,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:48:32,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087845028] [2024-06-28 02:48:32,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:48:32,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:48:32,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:48:32,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:48:32,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:48:32,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087845028] [2024-06-28 02:48:32,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087845028] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:48:32,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:48:32,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:48:32,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293561755] [2024-06-28 02:48:32,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:48:32,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:48:32,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:48:32,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:48:32,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:48:32,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:48:32,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 44 transitions, 239 flow. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:32,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:48:32,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:48:32,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:48:32,939 INFO L124 PetriNetUnfolderBase]: 211/380 cut-off events. [2024-06-28 02:48:32,939 INFO L125 PetriNetUnfolderBase]: For 1184/1184 co-relation queries the response was YES. [2024-06-28 02:48:32,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1372 conditions, 380 events. 211/380 cut-off events. For 1184/1184 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1307 event pairs, 49 based on Foata normal form. 1/379 useless extension candidates. Maximal degree in co-relation 1347. Up to 365 conditions per place. [2024-06-28 02:48:32,942 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 38 selfloop transitions, 9 changer transitions 0/49 dead transitions. [2024-06-28 02:48:32,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 49 transitions, 345 flow [2024-06-28 02:48:32,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 02:48:32,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 02:48:32,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 69 transitions. [2024-06-28 02:48:32,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-28 02:48:32,944 INFO L175 Difference]: Start difference. First operand has 52 places, 44 transitions, 239 flow. Second operand 6 states and 69 transitions. [2024-06-28 02:48:32,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 49 transitions, 345 flow [2024-06-28 02:48:32,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 49 transitions, 337 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-06-28 02:48:32,947 INFO L231 Difference]: Finished difference. Result has 57 places, 44 transitions, 254 flow [2024-06-28 02:48:32,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=254, PETRI_PLACES=57, PETRI_TRANSITIONS=44} [2024-06-28 02:48:32,948 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 27 predicate places. [2024-06-28 02:48:32,948 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 44 transitions, 254 flow [2024-06-28 02:48:32,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:32,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:48:32,948 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:48:32,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 02:48:32,949 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:48:32,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:48:32,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1114817301, now seen corresponding path program 3 times [2024-06-28 02:48:32,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:48:32,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441602823] [2024-06-28 02:48:32,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:48:32,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:48:32,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:48:33,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:48:33,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:48:33,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441602823] [2024-06-28 02:48:33,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441602823] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:48:33,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:48:33,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 02:48:33,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980628377] [2024-06-28 02:48:33,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:48:33,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 02:48:33,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:48:33,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 02:48:33,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-28 02:48:33,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:48:33,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 44 transitions, 254 flow. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:33,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:48:33,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:48:33,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:48:33,811 INFO L124 PetriNetUnfolderBase]: 209/377 cut-off events. [2024-06-28 02:48:33,811 INFO L125 PetriNetUnfolderBase]: For 1500/1500 co-relation queries the response was YES. [2024-06-28 02:48:33,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1408 conditions, 377 events. 209/377 cut-off events. For 1500/1500 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1289 event pairs, 49 based on Foata normal form. 1/376 useless extension candidates. Maximal degree in co-relation 1380. Up to 345 conditions per place. [2024-06-28 02:48:33,814 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 38 selfloop transitions, 17 changer transitions 0/57 dead transitions. [2024-06-28 02:48:33,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 57 transitions, 413 flow [2024-06-28 02:48:33,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:48:33,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:48:33,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 84 transitions. [2024-06-28 02:48:33,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-28 02:48:33,816 INFO L175 Difference]: Start difference. First operand has 57 places, 44 transitions, 254 flow. Second operand 7 states and 84 transitions. [2024-06-28 02:48:33,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 57 transitions, 413 flow [2024-06-28 02:48:33,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 57 transitions, 396 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-28 02:48:33,821 INFO L231 Difference]: Finished difference. Result has 61 places, 48 transitions, 317 flow [2024-06-28 02:48:33,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=317, PETRI_PLACES=61, PETRI_TRANSITIONS=48} [2024-06-28 02:48:33,822 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 31 predicate places. [2024-06-28 02:48:33,822 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 48 transitions, 317 flow [2024-06-28 02:48:33,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:33,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:48:33,823 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:48:33,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 02:48:33,823 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:48:33,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:48:33,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1767584361, now seen corresponding path program 1 times [2024-06-28 02:48:33,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:48:33,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252285805] [2024-06-28 02:48:33,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:48:33,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:48:33,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:48:34,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:48:34,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:48:34,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252285805] [2024-06-28 02:48:34,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252285805] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:48:34,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:48:34,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:48:34,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193222870] [2024-06-28 02:48:34,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:48:34,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:48:34,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:48:34,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:48:34,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:48:34,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:48:34,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 48 transitions, 317 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:34,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:48:34,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:48:34,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:48:35,194 INFO L124 PetriNetUnfolderBase]: 212/382 cut-off events. [2024-06-28 02:48:35,195 INFO L125 PetriNetUnfolderBase]: For 1928/1928 co-relation queries the response was YES. [2024-06-28 02:48:35,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1535 conditions, 382 events. 212/382 cut-off events. For 1928/1928 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1337 event pairs, 49 based on Foata normal form. 1/381 useless extension candidates. Maximal degree in co-relation 1505. Up to 327 conditions per place. [2024-06-28 02:48:35,198 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 41 selfloop transitions, 21 changer transitions 0/64 dead transitions. [2024-06-28 02:48:35,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 64 transitions, 517 flow [2024-06-28 02:48:35,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:48:35,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:48:35,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 88 transitions. [2024-06-28 02:48:35,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4055299539170507 [2024-06-28 02:48:35,199 INFO L175 Difference]: Start difference. First operand has 61 places, 48 transitions, 317 flow. Second operand 7 states and 88 transitions. [2024-06-28 02:48:35,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 64 transitions, 517 flow [2024-06-28 02:48:35,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 64 transitions, 485 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-28 02:48:35,203 INFO L231 Difference]: Finished difference. Result has 65 places, 52 transitions, 360 flow [2024-06-28 02:48:35,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=360, PETRI_PLACES=65, PETRI_TRANSITIONS=52} [2024-06-28 02:48:35,204 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 35 predicate places. [2024-06-28 02:48:35,204 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 52 transitions, 360 flow [2024-06-28 02:48:35,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:35,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:48:35,205 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:48:35,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 02:48:35,205 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:48:35,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:48:35,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1502795314, now seen corresponding path program 1 times [2024-06-28 02:48:35,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:48:35,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823502163] [2024-06-28 02:48:35,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:48:35,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:48:35,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:48:35,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:48:35,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:48:35,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823502163] [2024-06-28 02:48:35,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823502163] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:48:35,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:48:35,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:48:35,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686404619] [2024-06-28 02:48:35,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:48:35,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:48:35,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:48:35,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:48:35,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:48:36,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:48:36,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 52 transitions, 360 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:36,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:48:36,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:48:36,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:48:36,283 INFO L124 PetriNetUnfolderBase]: 231/413 cut-off events. [2024-06-28 02:48:36,283 INFO L125 PetriNetUnfolderBase]: For 2570/2570 co-relation queries the response was YES. [2024-06-28 02:48:36,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1737 conditions, 413 events. 231/413 cut-off events. For 2570/2570 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1453 event pairs, 51 based on Foata normal form. 3/414 useless extension candidates. Maximal degree in co-relation 1706. Up to 351 conditions per place. [2024-06-28 02:48:36,287 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 48 selfloop transitions, 21 changer transitions 0/71 dead transitions. [2024-06-28 02:48:36,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 71 transitions, 578 flow [2024-06-28 02:48:36,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:48:36,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:48:36,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 90 transitions. [2024-06-28 02:48:36,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147465437788018 [2024-06-28 02:48:36,289 INFO L175 Difference]: Start difference. First operand has 65 places, 52 transitions, 360 flow. Second operand 7 states and 90 transitions. [2024-06-28 02:48:36,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 71 transitions, 578 flow [2024-06-28 02:48:36,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 71 transitions, 547 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-28 02:48:36,296 INFO L231 Difference]: Finished difference. Result has 70 places, 58 transitions, 421 flow [2024-06-28 02:48:36,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=421, PETRI_PLACES=70, PETRI_TRANSITIONS=58} [2024-06-28 02:48:36,297 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 40 predicate places. [2024-06-28 02:48:36,297 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 58 transitions, 421 flow [2024-06-28 02:48:36,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:36,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:48:36,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:48:36,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 02:48:36,298 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:48:36,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:48:36,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1502795097, now seen corresponding path program 2 times [2024-06-28 02:48:36,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:48:36,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301271018] [2024-06-28 02:48:36,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:48:36,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:48:36,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:48:37,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:48:37,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:48:37,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301271018] [2024-06-28 02:48:37,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301271018] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:48:37,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:48:37,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:48:37,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648267915] [2024-06-28 02:48:37,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:48:37,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:48:37,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:48:37,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:48:37,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:48:37,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:48:37,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 58 transitions, 421 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:37,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:48:37,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:48:37,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:48:37,591 INFO L124 PetriNetUnfolderBase]: 234/418 cut-off events. [2024-06-28 02:48:37,591 INFO L125 PetriNetUnfolderBase]: For 2950/2950 co-relation queries the response was YES. [2024-06-28 02:48:37,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1892 conditions, 418 events. 234/418 cut-off events. For 2950/2950 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1485 event pairs, 50 based on Foata normal form. 1/417 useless extension candidates. Maximal degree in co-relation 1858. Up to 381 conditions per place. [2024-06-28 02:48:37,595 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 47 selfloop transitions, 19 changer transitions 0/68 dead transitions. [2024-06-28 02:48:37,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 68 transitions, 587 flow [2024-06-28 02:48:37,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:48:37,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:48:37,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 83 transitions. [2024-06-28 02:48:37,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3824884792626728 [2024-06-28 02:48:37,597 INFO L175 Difference]: Start difference. First operand has 70 places, 58 transitions, 421 flow. Second operand 7 states and 83 transitions. [2024-06-28 02:48:37,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 68 transitions, 587 flow [2024-06-28 02:48:37,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 68 transitions, 571 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-28 02:48:37,603 INFO L231 Difference]: Finished difference. Result has 75 places, 60 transitions, 467 flow [2024-06-28 02:48:37,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=405, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=467, PETRI_PLACES=75, PETRI_TRANSITIONS=60} [2024-06-28 02:48:37,604 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 45 predicate places. [2024-06-28 02:48:37,604 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 60 transitions, 467 flow [2024-06-28 02:48:37,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:37,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:48:37,605 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:48:37,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 02:48:37,605 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:48:37,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:48:37,605 INFO L85 PathProgramCache]: Analyzing trace with hash -578692951, now seen corresponding path program 3 times [2024-06-28 02:48:37,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:48:37,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529048896] [2024-06-28 02:48:37,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:48:37,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:48:37,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:48:38,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:48:38,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:48:38,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529048896] [2024-06-28 02:48:38,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529048896] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:48:38,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:48:38,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:48:38,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583866472] [2024-06-28 02:48:38,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:48:38,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:48:38,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:48:38,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:48:38,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:48:38,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:48:38,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 60 transitions, 467 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:38,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:48:38,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:48:38,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:48:38,658 INFO L124 PetriNetUnfolderBase]: 232/415 cut-off events. [2024-06-28 02:48:38,658 INFO L125 PetriNetUnfolderBase]: For 3384/3384 co-relation queries the response was YES. [2024-06-28 02:48:38,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1932 conditions, 415 events. 232/415 cut-off events. For 3384/3384 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1458 event pairs, 50 based on Foata normal form. 1/414 useless extension candidates. Maximal degree in co-relation 1895. Up to 397 conditions per place. [2024-06-28 02:48:38,662 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 53 selfloop transitions, 11 changer transitions 0/66 dead transitions. [2024-06-28 02:48:38,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 66 transitions, 609 flow [2024-06-28 02:48:38,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:48:38,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:48:38,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 78 transitions. [2024-06-28 02:48:38,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35944700460829493 [2024-06-28 02:48:38,663 INFO L175 Difference]: Start difference. First operand has 75 places, 60 transitions, 467 flow. Second operand 7 states and 78 transitions. [2024-06-28 02:48:38,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 66 transitions, 609 flow [2024-06-28 02:48:38,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 66 transitions, 565 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-28 02:48:38,669 INFO L231 Difference]: Finished difference. Result has 77 places, 60 transitions, 450 flow [2024-06-28 02:48:38,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=423, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=450, PETRI_PLACES=77, PETRI_TRANSITIONS=60} [2024-06-28 02:48:38,670 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 47 predicate places. [2024-06-28 02:48:38,670 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 60 transitions, 450 flow [2024-06-28 02:48:38,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:38,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:48:38,671 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:48:38,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 02:48:38,671 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:48:38,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:48:38,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1974654658, now seen corresponding path program 2 times [2024-06-28 02:48:38,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:48:38,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442462692] [2024-06-28 02:48:38,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:48:38,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:48:38,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:48:39,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:48:39,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:48:39,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442462692] [2024-06-28 02:48:39,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442462692] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:48:39,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:48:39,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:48:39,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349792371] [2024-06-28 02:48:39,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:48:39,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:48:39,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:48:39,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:48:39,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:48:39,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:48:39,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 60 transitions, 450 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:39,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:48:39,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:48:39,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:48:39,647 INFO L124 PetriNetUnfolderBase]: 241/430 cut-off events. [2024-06-28 02:48:39,648 INFO L125 PetriNetUnfolderBase]: For 4044/4044 co-relation queries the response was YES. [2024-06-28 02:48:39,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2011 conditions, 430 events. 241/430 cut-off events. For 4044/4044 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1525 event pairs, 50 based on Foata normal form. 3/431 useless extension candidates. Maximal degree in co-relation 1973. Up to 406 conditions per place. [2024-06-28 02:48:39,652 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 56 selfloop transitions, 12 changer transitions 0/70 dead transitions. [2024-06-28 02:48:39,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 70 transitions, 622 flow [2024-06-28 02:48:39,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:48:39,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:48:39,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-28 02:48:39,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35080645161290325 [2024-06-28 02:48:39,653 INFO L175 Difference]: Start difference. First operand has 77 places, 60 transitions, 450 flow. Second operand 8 states and 87 transitions. [2024-06-28 02:48:39,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 70 transitions, 622 flow [2024-06-28 02:48:39,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 70 transitions, 580 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-28 02:48:39,659 INFO L231 Difference]: Finished difference. Result has 78 places, 62 transitions, 457 flow [2024-06-28 02:48:39,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=457, PETRI_PLACES=78, PETRI_TRANSITIONS=62} [2024-06-28 02:48:39,660 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 48 predicate places. [2024-06-28 02:48:39,660 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 62 transitions, 457 flow [2024-06-28 02:48:39,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:39,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:48:39,661 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:48:39,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 02:48:39,661 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:48:39,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:48:39,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1974387748, now seen corresponding path program 3 times [2024-06-28 02:48:39,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:48:39,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451408802] [2024-06-28 02:48:39,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:48:39,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:48:39,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:48:40,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:48:40,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:48:40,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451408802] [2024-06-28 02:48:40,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451408802] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:48:40,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:48:40,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 02:48:40,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131777950] [2024-06-28 02:48:40,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:48:40,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 02:48:40,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:48:40,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 02:48:40,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 02:48:40,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:48:40,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 62 transitions, 457 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:40,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:48:40,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:48:40,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:48:40,645 INFO L124 PetriNetUnfolderBase]: 235/421 cut-off events. [2024-06-28 02:48:40,645 INFO L125 PetriNetUnfolderBase]: For 4299/4299 co-relation queries the response was YES. [2024-06-28 02:48:40,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1970 conditions, 421 events. 235/421 cut-off events. For 4299/4299 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1500 event pairs, 48 based on Foata normal form. 3/422 useless extension candidates. Maximal degree in co-relation 1932. Up to 385 conditions per place. [2024-06-28 02:48:40,649 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 56 selfloop transitions, 14 changer transitions 0/72 dead transitions. [2024-06-28 02:48:40,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 72 transitions, 623 flow [2024-06-28 02:48:40,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 02:48:40,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 02:48:40,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 84 transitions. [2024-06-28 02:48:40,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-28 02:48:40,650 INFO L175 Difference]: Start difference. First operand has 78 places, 62 transitions, 457 flow. Second operand 7 states and 84 transitions. [2024-06-28 02:48:40,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 72 transitions, 623 flow [2024-06-28 02:48:40,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 72 transitions, 582 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-28 02:48:40,657 INFO L231 Difference]: Finished difference. Result has 78 places, 62 transitions, 449 flow [2024-06-28 02:48:40,657 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=449, PETRI_PLACES=78, PETRI_TRANSITIONS=62} [2024-06-28 02:48:40,657 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 48 predicate places. [2024-06-28 02:48:40,657 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 62 transitions, 449 flow [2024-06-28 02:48:40,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:40,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:48:40,658 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:48:40,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 02:48:40,658 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:48:40,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:48:40,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1039578874, now seen corresponding path program 1 times [2024-06-28 02:48:40,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:48:40,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655926184] [2024-06-28 02:48:40,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:48:40,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:48:40,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:48:41,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:48:41,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:48:41,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655926184] [2024-06-28 02:48:41,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655926184] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:48:41,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:48:41,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:48:41,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134727849] [2024-06-28 02:48:41,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:48:41,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:48:41,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:48:41,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:48:41,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:48:41,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:48:41,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 62 transitions, 449 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:41,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:48:41,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:48:41,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:48:42,175 INFO L124 PetriNetUnfolderBase]: 241/431 cut-off events. [2024-06-28 02:48:42,175 INFO L125 PetriNetUnfolderBase]: For 4631/4631 co-relation queries the response was YES. [2024-06-28 02:48:42,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2037 conditions, 431 events. 241/431 cut-off events. For 4631/4631 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1541 event pairs, 46 based on Foata normal form. 2/431 useless extension candidates. Maximal degree in co-relation 2000. Up to 373 conditions per place. [2024-06-28 02:48:42,179 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 61 selfloop transitions, 17 changer transitions 0/80 dead transitions. [2024-06-28 02:48:42,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 80 transitions, 669 flow [2024-06-28 02:48:42,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:48:42,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:48:42,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 98 transitions. [2024-06-28 02:48:42,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3951612903225806 [2024-06-28 02:48:42,183 INFO L175 Difference]: Start difference. First operand has 78 places, 62 transitions, 449 flow. Second operand 8 states and 98 transitions. [2024-06-28 02:48:42,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 80 transitions, 669 flow [2024-06-28 02:48:42,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 80 transitions, 622 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 02:48:42,192 INFO L231 Difference]: Finished difference. Result has 80 places, 64 transitions, 460 flow [2024-06-28 02:48:42,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=402, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=460, PETRI_PLACES=80, PETRI_TRANSITIONS=64} [2024-06-28 02:48:42,193 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 50 predicate places. [2024-06-28 02:48:42,193 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 64 transitions, 460 flow [2024-06-28 02:48:42,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:42,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:48:42,194 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:48:42,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 02:48:42,194 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:48:42,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:48:42,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1039458904, now seen corresponding path program 2 times [2024-06-28 02:48:42,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:48:42,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587880108] [2024-06-28 02:48:42,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:48:42,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:48:42,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:48:43,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:48:43,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:48:43,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587880108] [2024-06-28 02:48:43,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587880108] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:48:43,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:48:43,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:48:43,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872458245] [2024-06-28 02:48:43,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:48:43,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:48:43,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:48:43,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:48:43,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:48:43,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:48:43,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 64 transitions, 460 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:43,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:48:43,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:48:43,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:48:43,600 INFO L124 PetriNetUnfolderBase]: 244/436 cut-off events. [2024-06-28 02:48:43,600 INFO L125 PetriNetUnfolderBase]: For 5019/5019 co-relation queries the response was YES. [2024-06-28 02:48:43,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2112 conditions, 436 events. 244/436 cut-off events. For 5019/5019 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1575 event pairs, 47 based on Foata normal form. 1/435 useless extension candidates. Maximal degree in co-relation 2074. Up to 360 conditions per place. [2024-06-28 02:48:43,604 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 53 selfloop transitions, 28 changer transitions 0/83 dead transitions. [2024-06-28 02:48:43,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 83 transitions, 739 flow [2024-06-28 02:48:43,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:48:43,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:48:43,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 99 transitions. [2024-06-28 02:48:43,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39919354838709675 [2024-06-28 02:48:43,606 INFO L175 Difference]: Start difference. First operand has 80 places, 64 transitions, 460 flow. Second operand 8 states and 99 transitions. [2024-06-28 02:48:43,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 83 transitions, 739 flow [2024-06-28 02:48:43,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 83 transitions, 690 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-28 02:48:43,613 INFO L231 Difference]: Finished difference. Result has 83 places, 70 transitions, 533 flow [2024-06-28 02:48:43,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=533, PETRI_PLACES=83, PETRI_TRANSITIONS=70} [2024-06-28 02:48:43,614 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 53 predicate places. [2024-06-28 02:48:43,615 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 70 transitions, 533 flow [2024-06-28 02:48:43,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:43,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:48:43,615 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:48:43,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 02:48:43,615 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:48:43,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:48:43,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1039458718, now seen corresponding path program 1 times [2024-06-28 02:48:43,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:48:43,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481344907] [2024-06-28 02:48:43,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:48:43,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:48:43,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:48:44,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:48:44,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:48:44,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481344907] [2024-06-28 02:48:44,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481344907] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:48:44,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:48:44,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:48:44,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052452795] [2024-06-28 02:48:44,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:48:44,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:48:44,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:48:44,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:48:44,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:48:44,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:48:44,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 70 transitions, 533 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:44,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:48:44,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:48:44,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:48:45,026 INFO L124 PetriNetUnfolderBase]: 257/457 cut-off events. [2024-06-28 02:48:45,026 INFO L125 PetriNetUnfolderBase]: For 6006/6006 co-relation queries the response was YES. [2024-06-28 02:48:45,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2284 conditions, 457 events. 257/457 cut-off events. For 6006/6006 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1678 event pairs, 47 based on Foata normal form. 1/456 useless extension candidates. Maximal degree in co-relation 2244. Up to 336 conditions per place. [2024-06-28 02:48:45,031 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 59 selfloop transitions, 30 changer transitions 0/91 dead transitions. [2024-06-28 02:48:45,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 91 transitions, 811 flow [2024-06-28 02:48:45,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:48:45,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:48:45,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 104 transitions. [2024-06-28 02:48:45,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-28 02:48:45,032 INFO L175 Difference]: Start difference. First operand has 83 places, 70 transitions, 533 flow. Second operand 8 states and 104 transitions. [2024-06-28 02:48:45,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 91 transitions, 811 flow [2024-06-28 02:48:45,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 91 transitions, 774 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-06-28 02:48:45,042 INFO L231 Difference]: Finished difference. Result has 89 places, 75 transitions, 607 flow [2024-06-28 02:48:45,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=496, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=607, PETRI_PLACES=89, PETRI_TRANSITIONS=75} [2024-06-28 02:48:45,043 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 59 predicate places. [2024-06-28 02:48:45,043 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 75 transitions, 607 flow [2024-06-28 02:48:45,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:45,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:48:45,043 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:48:45,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 02:48:45,044 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:48:45,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:48:45,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1034817088, now seen corresponding path program 2 times [2024-06-28 02:48:45,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:48:45,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130909646] [2024-06-28 02:48:45,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:48:45,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:48:45,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:48:45,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:48:45,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:48:45,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130909646] [2024-06-28 02:48:45,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130909646] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:48:45,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:48:45,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:48:45,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333711595] [2024-06-28 02:48:45,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:48:45,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:48:45,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:48:45,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:48:45,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:48:46,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:48:46,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 75 transitions, 607 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:46,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:48:46,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:48:46,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:48:46,288 INFO L124 PetriNetUnfolderBase]: 275/486 cut-off events. [2024-06-28 02:48:46,288 INFO L125 PetriNetUnfolderBase]: For 7227/7227 co-relation queries the response was YES. [2024-06-28 02:48:46,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2636 conditions, 486 events. 275/486 cut-off events. For 7227/7227 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1821 event pairs, 47 based on Foata normal form. 1/485 useless extension candidates. Maximal degree in co-relation 2593. Up to 399 conditions per place. [2024-06-28 02:48:46,293 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 65 selfloop transitions, 28 changer transitions 0/95 dead transitions. [2024-06-28 02:48:46,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 95 transitions, 912 flow [2024-06-28 02:48:46,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:48:46,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:48:46,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-06-28 02:48:46,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4153225806451613 [2024-06-28 02:48:46,295 INFO L175 Difference]: Start difference. First operand has 89 places, 75 transitions, 607 flow. Second operand 8 states and 103 transitions. [2024-06-28 02:48:46,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 95 transitions, 912 flow [2024-06-28 02:48:46,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 95 transitions, 871 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-28 02:48:46,306 INFO L231 Difference]: Finished difference. Result has 94 places, 80 transitions, 678 flow [2024-06-28 02:48:46,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=572, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=678, PETRI_PLACES=94, PETRI_TRANSITIONS=80} [2024-06-28 02:48:46,307 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 64 predicate places. [2024-06-28 02:48:46,307 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 80 transitions, 678 flow [2024-06-28 02:48:46,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:46,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:48:46,308 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:48:46,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 02:48:46,308 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:48:46,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:48:46,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1034817274, now seen corresponding path program 3 times [2024-06-28 02:48:46,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:48:46,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048094573] [2024-06-28 02:48:46,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:48:46,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:48:46,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:48:47,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:48:47,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:48:47,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048094573] [2024-06-28 02:48:47,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048094573] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:48:47,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:48:47,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:48:47,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346444217] [2024-06-28 02:48:47,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:48:47,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:48:47,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:48:47,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:48:47,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:48:47,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:48:47,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 80 transitions, 678 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:47,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:48:47,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:48:47,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:48:47,385 INFO L124 PetriNetUnfolderBase]: 281/496 cut-off events. [2024-06-28 02:48:47,385 INFO L125 PetriNetUnfolderBase]: For 8229/8229 co-relation queries the response was YES. [2024-06-28 02:48:47,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2814 conditions, 496 events. 281/496 cut-off events. For 8229/8229 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1860 event pairs, 51 based on Foata normal form. 2/496 useless extension candidates. Maximal degree in co-relation 2768. Up to 453 conditions per place. [2024-06-28 02:48:47,394 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 69 selfloop transitions, 22 changer transitions 0/93 dead transitions. [2024-06-28 02:48:47,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 93 transitions, 920 flow [2024-06-28 02:48:47,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:48:47,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:48:47,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2024-06-28 02:48:47,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-28 02:48:47,405 INFO L175 Difference]: Start difference. First operand has 94 places, 80 transitions, 678 flow. Second operand 8 states and 93 transitions. [2024-06-28 02:48:47,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 93 transitions, 920 flow [2024-06-28 02:48:47,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 93 transitions, 890 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-28 02:48:47,433 INFO L231 Difference]: Finished difference. Result has 98 places, 83 transitions, 736 flow [2024-06-28 02:48:47,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=648, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=736, PETRI_PLACES=98, PETRI_TRANSITIONS=83} [2024-06-28 02:48:47,434 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 68 predicate places. [2024-06-28 02:48:47,434 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 83 transitions, 736 flow [2024-06-28 02:48:47,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:47,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:48:47,435 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:48:47,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 02:48:47,435 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:48:47,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:48:47,436 INFO L85 PathProgramCache]: Analyzing trace with hash -657984800, now seen corresponding path program 3 times [2024-06-28 02:48:47,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:48:47,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352544597] [2024-06-28 02:48:47,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:48:47,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:48:47,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:48:48,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:48:48,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:48:48,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352544597] [2024-06-28 02:48:48,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352544597] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:48:48,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:48:48,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:48:48,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415917269] [2024-06-28 02:48:48,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:48:48,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:48:48,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:48:48,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:48:48,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:48:48,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:48:48,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 83 transitions, 736 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:48,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:48:48,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:48:48,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:48:48,645 INFO L124 PetriNetUnfolderBase]: 275/487 cut-off events. [2024-06-28 02:48:48,646 INFO L125 PetriNetUnfolderBase]: For 8660/8660 co-relation queries the response was YES. [2024-06-28 02:48:48,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2818 conditions, 487 events. 275/487 cut-off events. For 8660/8660 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1814 event pairs, 47 based on Foata normal form. 3/488 useless extension candidates. Maximal degree in co-relation 2770. Up to 412 conditions per place. [2024-06-28 02:48:48,650 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 69 selfloop transitions, 26 changer transitions 0/97 dead transitions. [2024-06-28 02:48:48,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 97 transitions, 970 flow [2024-06-28 02:48:48,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:48:48,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:48:48,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 100 transitions. [2024-06-28 02:48:48,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-28 02:48:48,652 INFO L175 Difference]: Start difference. First operand has 98 places, 83 transitions, 736 flow. Second operand 8 states and 100 transitions. [2024-06-28 02:48:48,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 97 transitions, 970 flow [2024-06-28 02:48:48,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 97 transitions, 906 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-28 02:48:48,667 INFO L231 Difference]: Finished difference. Result has 100 places, 83 transitions, 730 flow [2024-06-28 02:48:48,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=672, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=730, PETRI_PLACES=100, PETRI_TRANSITIONS=83} [2024-06-28 02:48:48,668 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 70 predicate places. [2024-06-28 02:48:48,668 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 83 transitions, 730 flow [2024-06-28 02:48:48,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:48,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:48:48,669 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:48:48,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 02:48:48,669 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:48:48,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:48:48,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1256391904, now seen corresponding path program 4 times [2024-06-28 02:48:48,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:48:48,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928458009] [2024-06-28 02:48:48,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:48:48,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:48:48,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:48:49,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:48:49,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:48:49,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928458009] [2024-06-28 02:48:49,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928458009] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:48:49,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:48:49,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:48:49,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902430725] [2024-06-28 02:48:49,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:48:49,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:48:49,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:48:49,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:48:49,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:48:49,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:48:49,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 83 transitions, 730 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:49,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:48:49,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:48:49,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:48:49,876 INFO L124 PetriNetUnfolderBase]: 284/502 cut-off events. [2024-06-28 02:48:49,876 INFO L125 PetriNetUnfolderBase]: For 9482/9482 co-relation queries the response was YES. [2024-06-28 02:48:49,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2936 conditions, 502 events. 284/502 cut-off events. For 9482/9482 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1903 event pairs, 48 based on Foata normal form. 3/503 useless extension candidates. Maximal degree in co-relation 2887. Up to 455 conditions per place. [2024-06-28 02:48:49,881 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 79 selfloop transitions, 17 changer transitions 0/98 dead transitions. [2024-06-28 02:48:49,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 98 transitions, 985 flow [2024-06-28 02:48:49,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:48:49,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:48:49,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 95 transitions. [2024-06-28 02:48:49,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38306451612903225 [2024-06-28 02:48:49,882 INFO L175 Difference]: Start difference. First operand has 100 places, 83 transitions, 730 flow. Second operand 8 states and 95 transitions. [2024-06-28 02:48:49,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 98 transitions, 985 flow [2024-06-28 02:48:49,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 98 transitions, 927 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-28 02:48:49,897 INFO L231 Difference]: Finished difference. Result has 101 places, 86 transitions, 743 flow [2024-06-28 02:48:49,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=672, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=743, PETRI_PLACES=101, PETRI_TRANSITIONS=86} [2024-06-28 02:48:49,898 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 71 predicate places. [2024-06-28 02:48:49,898 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 86 transitions, 743 flow [2024-06-28 02:48:49,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:49,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:48:49,898 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:48:49,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 02:48:49,899 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:48:49,899 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:48:49,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1084752976, now seen corresponding path program 5 times [2024-06-28 02:48:49,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:48:49,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818485817] [2024-06-28 02:48:49,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:48:49,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:48:49,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:48:50,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:48:50,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:48:50,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818485817] [2024-06-28 02:48:50,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818485817] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:48:50,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:48:50,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:48:50,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295458398] [2024-06-28 02:48:50,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:48:50,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:48:50,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:48:50,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:48:50,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:48:50,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:48:50,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 86 transitions, 743 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:50,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:48:50,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:48:50,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:48:50,917 INFO L124 PetriNetUnfolderBase]: 283/501 cut-off events. [2024-06-28 02:48:50,917 INFO L125 PetriNetUnfolderBase]: For 9812/9812 co-relation queries the response was YES. [2024-06-28 02:48:50,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2922 conditions, 501 events. 283/501 cut-off events. For 9812/9812 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1899 event pairs, 49 based on Foata normal form. 3/502 useless extension candidates. Maximal degree in co-relation 2872. Up to 466 conditions per place. [2024-06-28 02:48:50,922 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 82 selfloop transitions, 14 changer transitions 0/98 dead transitions. [2024-06-28 02:48:50,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 98 transitions, 983 flow [2024-06-28 02:48:50,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:48:50,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:48:50,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 91 transitions. [2024-06-28 02:48:50,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36693548387096775 [2024-06-28 02:48:50,924 INFO L175 Difference]: Start difference. First operand has 101 places, 86 transitions, 743 flow. Second operand 8 states and 91 transitions. [2024-06-28 02:48:50,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 98 transitions, 983 flow [2024-06-28 02:48:50,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 98 transitions, 943 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-28 02:48:50,942 INFO L231 Difference]: Finished difference. Result has 103 places, 88 transitions, 761 flow [2024-06-28 02:48:50,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=703, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=761, PETRI_PLACES=103, PETRI_TRANSITIONS=88} [2024-06-28 02:48:50,942 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 73 predicate places. [2024-06-28 02:48:50,942 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 88 transitions, 761 flow [2024-06-28 02:48:50,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:50,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:48:50,943 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:48:50,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 02:48:50,943 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:48:50,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:48:50,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1076472256, now seen corresponding path program 6 times [2024-06-28 02:48:50,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:48:50,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669726643] [2024-06-28 02:48:50,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:48:50,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:48:50,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:48:51,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:48:51,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:48:51,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669726643] [2024-06-28 02:48:51,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669726643] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:48:51,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:48:51,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:48:51,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279603399] [2024-06-28 02:48:51,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:48:51,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:48:51,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:48:51,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:48:51,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:48:51,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:48:51,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 88 transitions, 761 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:51,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:48:51,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:48:51,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:48:52,143 INFO L124 PetriNetUnfolderBase]: 281/498 cut-off events. [2024-06-28 02:48:52,143 INFO L125 PetriNetUnfolderBase]: For 9890/9890 co-relation queries the response was YES. [2024-06-28 02:48:52,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2912 conditions, 498 events. 281/498 cut-off events. For 9890/9890 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1886 event pairs, 47 based on Foata normal form. 1/497 useless extension candidates. Maximal degree in co-relation 2861. Up to 434 conditions per place. [2024-06-28 02:48:52,147 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 73 selfloop transitions, 23 changer transitions 0/98 dead transitions. [2024-06-28 02:48:52,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 98 transitions, 981 flow [2024-06-28 02:48:52,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:48:52,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:48:52,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-28 02:48:52,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3790322580645161 [2024-06-28 02:48:52,148 INFO L175 Difference]: Start difference. First operand has 103 places, 88 transitions, 761 flow. Second operand 8 states and 94 transitions. [2024-06-28 02:48:52,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 98 transitions, 981 flow [2024-06-28 02:48:52,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 98 transitions, 933 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-28 02:48:52,167 INFO L231 Difference]: Finished difference. Result has 104 places, 88 transitions, 764 flow [2024-06-28 02:48:52,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=713, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=764, PETRI_PLACES=104, PETRI_TRANSITIONS=88} [2024-06-28 02:48:52,167 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 74 predicate places. [2024-06-28 02:48:52,167 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 88 transitions, 764 flow [2024-06-28 02:48:52,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:52,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:48:52,168 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:48:52,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 02:48:52,168 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:48:52,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:48:52,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1085049894, now seen corresponding path program 1 times [2024-06-28 02:48:52,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:48:52,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088666223] [2024-06-28 02:48:52,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:48:52,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:48:52,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:48:52,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:48:52,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:48:52,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088666223] [2024-06-28 02:48:52,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088666223] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:48:52,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:48:52,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:48:52,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927685576] [2024-06-28 02:48:52,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:48:52,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:48:52,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:48:52,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:48:52,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:48:52,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:48:52,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 88 transitions, 764 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:52,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:48:52,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:48:52,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:48:53,257 INFO L124 PetriNetUnfolderBase]: 277/492 cut-off events. [2024-06-28 02:48:53,257 INFO L125 PetriNetUnfolderBase]: For 10433/10433 co-relation queries the response was YES. [2024-06-28 02:48:53,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2869 conditions, 492 events. 277/492 cut-off events. For 10433/10433 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1846 event pairs, 48 based on Foata normal form. 2/492 useless extension candidates. Maximal degree in co-relation 2818. Up to 463 conditions per place. [2024-06-28 02:48:53,262 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 84 selfloop transitions, 13 changer transitions 0/99 dead transitions. [2024-06-28 02:48:53,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 99 transitions, 996 flow [2024-06-28 02:48:53,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:48:53,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:48:53,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-28 02:48:53,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3588709677419355 [2024-06-28 02:48:53,264 INFO L175 Difference]: Start difference. First operand has 104 places, 88 transitions, 764 flow. Second operand 8 states and 89 transitions. [2024-06-28 02:48:53,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 99 transitions, 996 flow [2024-06-28 02:48:53,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 99 transitions, 896 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-28 02:48:53,288 INFO L231 Difference]: Finished difference. Result has 104 places, 90 transitions, 717 flow [2024-06-28 02:48:53,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=664, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=717, PETRI_PLACES=104, PETRI_TRANSITIONS=90} [2024-06-28 02:48:53,289 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 74 predicate places. [2024-06-28 02:48:53,289 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 90 transitions, 717 flow [2024-06-28 02:48:53,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:53,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:48:53,290 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:48:53,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 02:48:53,290 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:48:53,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:48:53,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1076472070, now seen corresponding path program 4 times [2024-06-28 02:48:53,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:48:53,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369886214] [2024-06-28 02:48:53,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:48:53,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:48:53,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:48:54,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:48:54,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:48:54,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369886214] [2024-06-28 02:48:54,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369886214] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:48:54,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:48:54,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 02:48:54,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791433207] [2024-06-28 02:48:54,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:48:54,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 02:48:54,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:48:54,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 02:48:54,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 02:48:54,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:48:54,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 90 transitions, 717 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:54,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:48:54,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:48:54,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:48:54,272 INFO L124 PetriNetUnfolderBase]: 278/494 cut-off events. [2024-06-28 02:48:54,273 INFO L125 PetriNetUnfolderBase]: For 10850/10850 co-relation queries the response was YES. [2024-06-28 02:48:54,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2797 conditions, 494 events. 278/494 cut-off events. For 10850/10850 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1866 event pairs, 50 based on Foata normal form. 2/494 useless extension candidates. Maximal degree in co-relation 2746. Up to 470 conditions per place. [2024-06-28 02:48:54,277 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 84 selfloop transitions, 14 changer transitions 0/100 dead transitions. [2024-06-28 02:48:54,278 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 100 transitions, 959 flow [2024-06-28 02:48:54,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:48:54,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:48:54,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-28 02:48:54,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 02:48:54,279 INFO L175 Difference]: Start difference. First operand has 104 places, 90 transitions, 717 flow. Second operand 8 states and 88 transitions. [2024-06-28 02:48:54,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 100 transitions, 959 flow [2024-06-28 02:48:54,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 100 transitions, 913 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-28 02:48:54,296 INFO L231 Difference]: Finished difference. Result has 106 places, 92 transitions, 733 flow [2024-06-28 02:48:54,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=671, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=733, PETRI_PLACES=106, PETRI_TRANSITIONS=92} [2024-06-28 02:48:54,297 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 76 predicate places. [2024-06-28 02:48:54,297 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 92 transitions, 733 flow [2024-06-28 02:48:54,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:54,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:48:54,298 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:48:54,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 02:48:54,298 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:48:54,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:48:54,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1085060806, now seen corresponding path program 1 times [2024-06-28 02:48:54,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:48:54,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489697302] [2024-06-28 02:48:54,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:48:54,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:48:54,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:48:55,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:48:55,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:48:55,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489697302] [2024-06-28 02:48:55,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489697302] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:48:55,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:48:55,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:48:55,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292743575] [2024-06-28 02:48:55,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:48:55,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:48:55,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:48:55,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:48:55,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:48:55,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:48:55,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 92 transitions, 733 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:55,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:48:55,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:48:55,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:48:55,831 INFO L124 PetriNetUnfolderBase]: 275/489 cut-off events. [2024-06-28 02:48:55,832 INFO L125 PetriNetUnfolderBase]: For 11015/11015 co-relation queries the response was YES. [2024-06-28 02:48:55,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2764 conditions, 489 events. 275/489 cut-off events. For 11015/11015 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1822 event pairs, 47 based on Foata normal form. 2/489 useless extension candidates. Maximal degree in co-relation 2712. Up to 462 conditions per place. [2024-06-28 02:48:55,836 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 87 selfloop transitions, 12 changer transitions 0/101 dead transitions. [2024-06-28 02:48:55,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 101 transitions, 951 flow [2024-06-28 02:48:55,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 02:48:55,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 02:48:55,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-28 02:48:55,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35080645161290325 [2024-06-28 02:48:55,837 INFO L175 Difference]: Start difference. First operand has 106 places, 92 transitions, 733 flow. Second operand 8 states and 87 transitions. [2024-06-28 02:48:55,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 101 transitions, 951 flow [2024-06-28 02:48:55,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 101 transitions, 905 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-28 02:48:55,851 INFO L231 Difference]: Finished difference. Result has 108 places, 92 transitions, 715 flow [2024-06-28 02:48:55,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=687, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=715, PETRI_PLACES=108, PETRI_TRANSITIONS=92} [2024-06-28 02:48:55,852 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 78 predicate places. [2024-06-28 02:48:55,852 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 92 transitions, 715 flow [2024-06-28 02:48:55,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:55,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:48:55,852 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:48:55,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 02:48:55,853 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:48:55,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:48:55,853 INFO L85 PathProgramCache]: Analyzing trace with hash 929491443, now seen corresponding path program 1 times [2024-06-28 02:48:55,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:48:55,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939222925] [2024-06-28 02:48:55,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:48:55,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:48:55,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:48:56,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:48:56,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:48:56,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939222925] [2024-06-28 02:48:56,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939222925] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:48:56,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:48:56,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:48:56,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076298158] [2024-06-28 02:48:56,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:48:56,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:48:56,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:48:56,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:48:56,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:48:56,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:48:56,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 92 transitions, 715 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:56,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:48:56,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:48:56,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:48:57,186 INFO L124 PetriNetUnfolderBase]: 281/499 cut-off events. [2024-06-28 02:48:57,187 INFO L125 PetriNetUnfolderBase]: For 11776/11776 co-relation queries the response was YES. [2024-06-28 02:48:57,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2820 conditions, 499 events. 281/499 cut-off events. For 11776/11776 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1884 event pairs, 47 based on Foata normal form. 2/499 useless extension candidates. Maximal degree in co-relation 2767. Up to 433 conditions per place. [2024-06-28 02:48:57,191 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 89 selfloop transitions, 20 changer transitions 0/111 dead transitions. [2024-06-28 02:48:57,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 111 transitions, 1003 flow [2024-06-28 02:48:57,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:48:57,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:48:57,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-28 02:48:57,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-28 02:48:57,205 INFO L175 Difference]: Start difference. First operand has 108 places, 92 transitions, 715 flow. Second operand 9 states and 108 transitions. [2024-06-28 02:48:57,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 111 transitions, 1003 flow [2024-06-28 02:48:57,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 111 transitions, 975 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 02:48:57,221 INFO L231 Difference]: Finished difference. Result has 111 places, 94 transitions, 755 flow [2024-06-28 02:48:57,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=687, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=755, PETRI_PLACES=111, PETRI_TRANSITIONS=94} [2024-06-28 02:48:57,223 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 81 predicate places. [2024-06-28 02:48:57,223 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 94 transitions, 755 flow [2024-06-28 02:48:57,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:57,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:48:57,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:48:57,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 02:48:57,224 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:48:57,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:48:57,225 INFO L85 PathProgramCache]: Analyzing trace with hash 933216310, now seen corresponding path program 1 times [2024-06-28 02:48:57,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:48:57,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288849261] [2024-06-28 02:48:57,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:48:57,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:48:57,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:48:58,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:48:58,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:48:58,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288849261] [2024-06-28 02:48:58,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288849261] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:48:58,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:48:58,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:48:58,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722977920] [2024-06-28 02:48:58,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:48:58,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:48:58,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:48:58,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:48:58,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:48:58,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:48:58,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 94 transitions, 755 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:58,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:48:58,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:48:58,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:48:58,726 INFO L124 PetriNetUnfolderBase]: 297/525 cut-off events. [2024-06-28 02:48:58,727 INFO L125 PetriNetUnfolderBase]: For 13447/13447 co-relation queries the response was YES. [2024-06-28 02:48:58,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3052 conditions, 525 events. 297/525 cut-off events. For 13447/13447 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2029 event pairs, 46 based on Foata normal form. 2/525 useless extension candidates. Maximal degree in co-relation 2998. Up to 373 conditions per place. [2024-06-28 02:48:58,731 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 75 selfloop transitions, 39 changer transitions 0/116 dead transitions. [2024-06-28 02:48:58,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 116 transitions, 1125 flow [2024-06-28 02:48:58,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:48:58,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:48:58,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-28 02:48:58,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40860215053763443 [2024-06-28 02:48:58,733 INFO L175 Difference]: Start difference. First operand has 111 places, 94 transitions, 755 flow. Second operand 9 states and 114 transitions. [2024-06-28 02:48:58,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 116 transitions, 1125 flow [2024-06-28 02:48:58,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 116 transitions, 1075 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-28 02:48:58,754 INFO L231 Difference]: Finished difference. Result has 113 places, 98 transitions, 824 flow [2024-06-28 02:48:58,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=705, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=824, PETRI_PLACES=113, PETRI_TRANSITIONS=98} [2024-06-28 02:48:58,755 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 83 predicate places. [2024-06-28 02:48:58,755 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 98 transitions, 824 flow [2024-06-28 02:48:58,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:58,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:48:58,756 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:48:58,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 02:48:58,756 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:48:58,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:48:58,757 INFO L85 PathProgramCache]: Analyzing trace with hash 2136518863, now seen corresponding path program 2 times [2024-06-28 02:48:58,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:48:58,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671902740] [2024-06-28 02:48:58,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:48:58,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:48:58,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:48:59,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:48:59,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:48:59,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671902740] [2024-06-28 02:48:59,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671902740] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:48:59,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:48:59,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:48:59,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186312081] [2024-06-28 02:48:59,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:48:59,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:48:59,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:48:59,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:48:59,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:48:59,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:48:59,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 98 transitions, 824 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:48:59,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:48:59,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:48:59,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:00,175 INFO L124 PetriNetUnfolderBase]: 315/554 cut-off events. [2024-06-28 02:49:00,176 INFO L125 PetriNetUnfolderBase]: For 15402/15402 co-relation queries the response was YES. [2024-06-28 02:49:00,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3356 conditions, 554 events. 315/554 cut-off events. For 15402/15402 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2183 event pairs, 45 based on Foata normal form. 1/553 useless extension candidates. Maximal degree in co-relation 3301. Up to 359 conditions per place. [2024-06-28 02:49:00,179 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 76 selfloop transitions, 46 changer transitions 0/124 dead transitions. [2024-06-28 02:49:00,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 124 transitions, 1296 flow [2024-06-28 02:49:00,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:49:00,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:49:00,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-28 02:49:00,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-28 02:49:00,180 INFO L175 Difference]: Start difference. First operand has 113 places, 98 transitions, 824 flow. Second operand 9 states and 117 transitions. [2024-06-28 02:49:00,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 124 transitions, 1296 flow [2024-06-28 02:49:00,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 124 transitions, 1250 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-28 02:49:00,206 INFO L231 Difference]: Finished difference. Result has 119 places, 107 transitions, 985 flow [2024-06-28 02:49:00,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=778, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=985, PETRI_PLACES=119, PETRI_TRANSITIONS=107} [2024-06-28 02:49:00,207 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 89 predicate places. [2024-06-28 02:49:00,207 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 107 transitions, 985 flow [2024-06-28 02:49:00,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:00,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:00,207 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:00,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 02:49:00,208 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:49:00,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:00,208 INFO L85 PathProgramCache]: Analyzing trace with hash 2136513283, now seen corresponding path program 3 times [2024-06-28 02:49:00,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:00,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372776833] [2024-06-28 02:49:00,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:00,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:00,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:01,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:01,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:01,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372776833] [2024-06-28 02:49:01,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372776833] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:01,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:01,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:49:01,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757714718] [2024-06-28 02:49:01,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:01,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:49:01,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:01,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:49:01,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:49:01,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:49:01,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 107 transitions, 985 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:01,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:01,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:49:01,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:01,431 INFO L124 PetriNetUnfolderBase]: 313/551 cut-off events. [2024-06-28 02:49:01,432 INFO L125 PetriNetUnfolderBase]: For 16107/16107 co-relation queries the response was YES. [2024-06-28 02:49:01,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3532 conditions, 551 events. 313/551 cut-off events. For 16107/16107 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2159 event pairs, 46 based on Foata normal form. 1/550 useless extension candidates. Maximal degree in co-relation 3473. Up to 357 conditions per place. [2024-06-28 02:49:01,437 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 76 selfloop transitions, 46 changer transitions 0/124 dead transitions. [2024-06-28 02:49:01,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 124 transitions, 1338 flow [2024-06-28 02:49:01,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:49:01,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:49:01,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-28 02:49:01,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-28 02:49:01,438 INFO L175 Difference]: Start difference. First operand has 119 places, 107 transitions, 985 flow. Second operand 9 states and 117 transitions. [2024-06-28 02:49:01,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 124 transitions, 1338 flow [2024-06-28 02:49:01,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 124 transitions, 1285 flow, removed 16 selfloop flow, removed 4 redundant places. [2024-06-28 02:49:01,468 INFO L231 Difference]: Finished difference. Result has 124 places, 108 transitions, 1036 flow [2024-06-28 02:49:01,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=934, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1036, PETRI_PLACES=124, PETRI_TRANSITIONS=108} [2024-06-28 02:49:01,469 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 94 predicate places. [2024-06-28 02:49:01,469 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 108 transitions, 1036 flow [2024-06-28 02:49:01,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:01,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:01,470 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:01,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 02:49:01,470 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:49:01,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:01,470 INFO L85 PathProgramCache]: Analyzing trace with hash 2136513128, now seen corresponding path program 1 times [2024-06-28 02:49:01,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:01,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109254767] [2024-06-28 02:49:01,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:01,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:01,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:02,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:02,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:02,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109254767] [2024-06-28 02:49:02,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109254767] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:02,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:02,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:49:02,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837261207] [2024-06-28 02:49:02,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:02,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:49:02,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:02,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:49:02,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:49:02,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:49:02,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 108 transitions, 1036 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:02,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:02,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:49:02,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:03,219 INFO L124 PetriNetUnfolderBase]: 311/548 cut-off events. [2024-06-28 02:49:03,219 INFO L125 PetriNetUnfolderBase]: For 16905/16905 co-relation queries the response was YES. [2024-06-28 02:49:03,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3565 conditions, 548 events. 311/548 cut-off events. For 16905/16905 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2148 event pairs, 53 based on Foata normal form. 1/547 useless extension candidates. Maximal degree in co-relation 3505. Up to 469 conditions per place. [2024-06-28 02:49:03,223 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 90 selfloop transitions, 31 changer transitions 0/123 dead transitions. [2024-06-28 02:49:03,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 123 transitions, 1344 flow [2024-06-28 02:49:03,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:49:03,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:49:03,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-28 02:49:03,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835125448028674 [2024-06-28 02:49:03,224 INFO L175 Difference]: Start difference. First operand has 124 places, 108 transitions, 1036 flow. Second operand 9 states and 107 transitions. [2024-06-28 02:49:03,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 123 transitions, 1344 flow [2024-06-28 02:49:03,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 123 transitions, 1259 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-28 02:49:03,246 INFO L231 Difference]: Finished difference. Result has 127 places, 110 transitions, 1052 flow [2024-06-28 02:49:03,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=951, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1052, PETRI_PLACES=127, PETRI_TRANSITIONS=110} [2024-06-28 02:49:03,247 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 97 predicate places. [2024-06-28 02:49:03,247 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 110 transitions, 1052 flow [2024-06-28 02:49:03,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:03,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:03,247 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:03,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 02:49:03,248 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:49:03,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:03,248 INFO L85 PathProgramCache]: Analyzing trace with hash -2014356093, now seen corresponding path program 4 times [2024-06-28 02:49:03,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:03,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058447139] [2024-06-28 02:49:03,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:03,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:03,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:04,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:04,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:04,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058447139] [2024-06-28 02:49:04,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058447139] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:04,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:04,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:49:04,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451090125] [2024-06-28 02:49:04,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:04,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:49:04,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:04,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:49:04,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:49:04,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:49:04,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 110 transitions, 1052 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:04,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:04,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:49:04,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:04,471 INFO L124 PetriNetUnfolderBase]: 320/563 cut-off events. [2024-06-28 02:49:04,471 INFO L125 PetriNetUnfolderBase]: For 18874/18874 co-relation queries the response was YES. [2024-06-28 02:49:04,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3644 conditions, 563 events. 320/563 cut-off events. For 18874/18874 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2218 event pairs, 47 based on Foata normal form. 3/564 useless extension candidates. Maximal degree in co-relation 3583. Up to 477 conditions per place. [2024-06-28 02:49:04,475 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 97 selfloop transitions, 29 changer transitions 0/128 dead transitions. [2024-06-28 02:49:04,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 128 transitions, 1371 flow [2024-06-28 02:49:04,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:49:04,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:49:04,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-06-28 02:49:04,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3978494623655914 [2024-06-28 02:49:04,477 INFO L175 Difference]: Start difference. First operand has 127 places, 110 transitions, 1052 flow. Second operand 9 states and 111 transitions. [2024-06-28 02:49:04,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 128 transitions, 1371 flow [2024-06-28 02:49:04,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 128 transitions, 1286 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-28 02:49:04,501 INFO L231 Difference]: Finished difference. Result has 129 places, 113 transitions, 1068 flow [2024-06-28 02:49:04,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=967, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1068, PETRI_PLACES=129, PETRI_TRANSITIONS=113} [2024-06-28 02:49:04,501 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 99 predicate places. [2024-06-28 02:49:04,501 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 113 transitions, 1068 flow [2024-06-28 02:49:04,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:04,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:04,501 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:04,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 02:49:04,502 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:49:04,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:04,502 INFO L85 PathProgramCache]: Analyzing trace with hash 2147044248, now seen corresponding path program 2 times [2024-06-28 02:49:04,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:04,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123014185] [2024-06-28 02:49:04,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:04,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:04,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:05,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:05,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:05,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123014185] [2024-06-28 02:49:05,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123014185] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:05,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:05,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:49:05,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837380153] [2024-06-28 02:49:05,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:05,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:49:05,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:05,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:49:05,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:49:05,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:49:05,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 113 transitions, 1068 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:05,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:05,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:49:05,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:05,928 INFO L124 PetriNetUnfolderBase]: 326/573 cut-off events. [2024-06-28 02:49:05,928 INFO L125 PetriNetUnfolderBase]: For 19532/19532 co-relation queries the response was YES. [2024-06-28 02:49:05,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3729 conditions, 573 events. 326/573 cut-off events. For 19532/19532 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2270 event pairs, 47 based on Foata normal form. 2/573 useless extension candidates. Maximal degree in co-relation 3667. Up to 492 conditions per place. [2024-06-28 02:49:05,931 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 100 selfloop transitions, 28 changer transitions 0/130 dead transitions. [2024-06-28 02:49:05,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 130 transitions, 1378 flow [2024-06-28 02:49:05,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:49:05,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:49:05,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 110 transitions. [2024-06-28 02:49:05,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3942652329749104 [2024-06-28 02:49:05,932 INFO L175 Difference]: Start difference. First operand has 129 places, 113 transitions, 1068 flow. Second operand 9 states and 110 transitions. [2024-06-28 02:49:05,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 130 transitions, 1378 flow [2024-06-28 02:49:05,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 130 transitions, 1308 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-28 02:49:05,955 INFO L231 Difference]: Finished difference. Result has 131 places, 115 transitions, 1081 flow [2024-06-28 02:49:05,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=998, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1081, PETRI_PLACES=131, PETRI_TRANSITIONS=115} [2024-06-28 02:49:05,955 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 101 predicate places. [2024-06-28 02:49:05,955 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 115 transitions, 1081 flow [2024-06-28 02:49:05,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:05,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:05,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:05,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 02:49:05,956 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:49:05,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:05,956 INFO L85 PathProgramCache]: Analyzing trace with hash -2014557903, now seen corresponding path program 5 times [2024-06-28 02:49:05,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:05,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343221647] [2024-06-28 02:49:05,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:05,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:05,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:06,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:06,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:06,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343221647] [2024-06-28 02:49:06,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343221647] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:06,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:06,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:49:06,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647763457] [2024-06-28 02:49:06,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:06,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:49:06,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:06,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:49:06,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:49:06,926 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:49:06,926 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 115 transitions, 1081 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:06,926 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:06,926 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:49:06,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:07,130 INFO L124 PetriNetUnfolderBase]: 334/586 cut-off events. [2024-06-28 02:49:07,131 INFO L125 PetriNetUnfolderBase]: For 20660/20660 co-relation queries the response was YES. [2024-06-28 02:49:07,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3869 conditions, 586 events. 334/586 cut-off events. For 20660/20660 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2352 event pairs, 47 based on Foata normal form. 1/585 useless extension candidates. Maximal degree in co-relation 3806. Up to 482 conditions per place. [2024-06-28 02:49:07,134 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 98 selfloop transitions, 35 changer transitions 0/135 dead transitions. [2024-06-28 02:49:07,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 135 transitions, 1504 flow [2024-06-28 02:49:07,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:49:07,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:49:07,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-28 02:49:07,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40860215053763443 [2024-06-28 02:49:07,146 INFO L175 Difference]: Start difference. First operand has 131 places, 115 transitions, 1081 flow. Second operand 9 states and 114 transitions. [2024-06-28 02:49:07,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 135 transitions, 1504 flow [2024-06-28 02:49:07,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 135 transitions, 1441 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-28 02:49:07,179 INFO L231 Difference]: Finished difference. Result has 134 places, 120 transitions, 1163 flow [2024-06-28 02:49:07,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1018, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1163, PETRI_PLACES=134, PETRI_TRANSITIONS=120} [2024-06-28 02:49:07,180 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 104 predicate places. [2024-06-28 02:49:07,180 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 120 transitions, 1163 flow [2024-06-28 02:49:07,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:07,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:07,181 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:07,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 02:49:07,181 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:49:07,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:07,181 INFO L85 PathProgramCache]: Analyzing trace with hash -2014557686, now seen corresponding path program 3 times [2024-06-28 02:49:07,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:07,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955436114] [2024-06-28 02:49:07,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:07,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:07,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:08,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:08,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:08,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955436114] [2024-06-28 02:49:08,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955436114] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:08,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:08,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:49:08,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774523102] [2024-06-28 02:49:08,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:08,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:49:08,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:08,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:49:08,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:49:08,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:49:08,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 120 transitions, 1163 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:08,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:08,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:49:08,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:08,791 INFO L124 PetriNetUnfolderBase]: 340/596 cut-off events. [2024-06-28 02:49:08,792 INFO L125 PetriNetUnfolderBase]: For 22617/22617 co-relation queries the response was YES. [2024-06-28 02:49:08,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3990 conditions, 596 events. 340/596 cut-off events. For 22617/22617 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2401 event pairs, 47 based on Foata normal form. 2/596 useless extension candidates. Maximal degree in co-relation 3925. Up to 501 conditions per place. [2024-06-28 02:49:08,796 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 104 selfloop transitions, 31 changer transitions 0/137 dead transitions. [2024-06-28 02:49:08,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 137 transitions, 1491 flow [2024-06-28 02:49:08,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:49:08,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:49:08,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-06-28 02:49:08,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4014336917562724 [2024-06-28 02:49:08,798 INFO L175 Difference]: Start difference. First operand has 134 places, 120 transitions, 1163 flow. Second operand 9 states and 112 transitions. [2024-06-28 02:49:08,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 137 transitions, 1491 flow [2024-06-28 02:49:08,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 137 transitions, 1447 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-06-28 02:49:08,834 INFO L231 Difference]: Finished difference. Result has 139 places, 122 transitions, 1212 flow [2024-06-28 02:49:08,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1119, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1212, PETRI_PLACES=139, PETRI_TRANSITIONS=122} [2024-06-28 02:49:08,835 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 109 predicate places. [2024-06-28 02:49:08,835 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 122 transitions, 1212 flow [2024-06-28 02:49:08,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:08,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:08,835 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:08,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 02:49:08,835 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:49:08,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:08,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1077101043, now seen corresponding path program 6 times [2024-06-28 02:49:08,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:08,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843233453] [2024-06-28 02:49:08,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:08,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:08,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:09,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:09,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:09,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843233453] [2024-06-28 02:49:09,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843233453] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:09,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:09,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:49:09,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306738203] [2024-06-28 02:49:09,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:09,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:49:09,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:09,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:49:09,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:49:09,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:49:09,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 122 transitions, 1212 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:09,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:09,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:49:09,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:09,945 INFO L124 PetriNetUnfolderBase]: 356/622 cut-off events. [2024-06-28 02:49:09,945 INFO L125 PetriNetUnfolderBase]: For 25245/25245 co-relation queries the response was YES. [2024-06-28 02:49:09,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4308 conditions, 622 events. 356/622 cut-off events. For 25245/25245 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2533 event pairs, 47 based on Foata normal form. 2/622 useless extension candidates. Maximal degree in co-relation 4241. Up to 494 conditions per place. [2024-06-28 02:49:09,950 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 102 selfloop transitions, 39 changer transitions 0/143 dead transitions. [2024-06-28 02:49:09,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 143 transitions, 1666 flow [2024-06-28 02:49:09,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:49:09,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:49:09,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-06-28 02:49:09,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41935483870967744 [2024-06-28 02:49:09,957 INFO L175 Difference]: Start difference. First operand has 139 places, 122 transitions, 1212 flow. Second operand 9 states and 117 transitions. [2024-06-28 02:49:09,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 143 transitions, 1666 flow [2024-06-28 02:49:10,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 143 transitions, 1585 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-28 02:49:10,004 INFO L231 Difference]: Finished difference. Result has 142 places, 127 transitions, 1296 flow [2024-06-28 02:49:10,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1131, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1296, PETRI_PLACES=142, PETRI_TRANSITIONS=127} [2024-06-28 02:49:10,005 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 112 predicate places. [2024-06-28 02:49:10,005 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 127 transitions, 1296 flow [2024-06-28 02:49:10,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:10,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:10,006 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:10,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 02:49:10,006 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:49:10,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:10,007 INFO L85 PathProgramCache]: Analyzing trace with hash 300594170, now seen corresponding path program 4 times [2024-06-28 02:49:10,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:10,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111367077] [2024-06-28 02:49:10,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:10,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:10,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:10,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:10,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:10,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111367077] [2024-06-28 02:49:10,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111367077] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:10,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:10,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:49:10,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705004267] [2024-06-28 02:49:10,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:10,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:49:10,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:10,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:49:10,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:49:11,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:49:11,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 127 transitions, 1296 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:11,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:11,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:49:11,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:11,386 INFO L124 PetriNetUnfolderBase]: 362/632 cut-off events. [2024-06-28 02:49:11,386 INFO L125 PetriNetUnfolderBase]: For 26962/26962 co-relation queries the response was YES. [2024-06-28 02:49:11,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4464 conditions, 632 events. 362/632 cut-off events. For 26962/26962 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2579 event pairs, 53 based on Foata normal form. 2/632 useless extension candidates. Maximal degree in co-relation 4395. Up to 591 conditions per place. [2024-06-28 02:49:11,390 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 123 selfloop transitions, 16 changer transitions 0/141 dead transitions. [2024-06-28 02:49:11,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 141 transitions, 1628 flow [2024-06-28 02:49:11,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:49:11,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:49:11,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-28 02:49:11,394 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36200716845878134 [2024-06-28 02:49:11,394 INFO L175 Difference]: Start difference. First operand has 142 places, 127 transitions, 1296 flow. Second operand 9 states and 101 transitions. [2024-06-28 02:49:11,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 141 transitions, 1628 flow [2024-06-28 02:49:11,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 141 transitions, 1563 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-28 02:49:11,437 INFO L231 Difference]: Finished difference. Result has 146 places, 129 transitions, 1298 flow [2024-06-28 02:49:11,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1231, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1298, PETRI_PLACES=146, PETRI_TRANSITIONS=129} [2024-06-28 02:49:11,437 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 116 predicate places. [2024-06-28 02:49:11,437 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 129 transitions, 1298 flow [2024-06-28 02:49:11,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:11,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:11,438 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:11,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 02:49:11,438 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:49:11,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:11,438 INFO L85 PathProgramCache]: Analyzing trace with hash -954986959, now seen corresponding path program 7 times [2024-06-28 02:49:11,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:11,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033302015] [2024-06-28 02:49:11,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:11,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:11,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:12,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:12,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:12,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033302015] [2024-06-28 02:49:12,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033302015] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:12,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:12,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:49:12,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352120659] [2024-06-28 02:49:12,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:12,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:49:12,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:12,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:49:12,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:49:12,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:49:12,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 129 transitions, 1298 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:12,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:12,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:49:12,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:12,591 INFO L124 PetriNetUnfolderBase]: 371/647 cut-off events. [2024-06-28 02:49:12,591 INFO L125 PetriNetUnfolderBase]: For 28837/28837 co-relation queries the response was YES. [2024-06-28 02:49:12,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4588 conditions, 647 events. 371/647 cut-off events. For 28837/28837 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2669 event pairs, 55 based on Foata normal form. 3/648 useless extension candidates. Maximal degree in co-relation 4517. Up to 601 conditions per place. [2024-06-28 02:49:12,595 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 125 selfloop transitions, 17 changer transitions 0/144 dead transitions. [2024-06-28 02:49:12,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 144 transitions, 1651 flow [2024-06-28 02:49:12,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:49:12,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:49:12,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-28 02:49:12,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3655913978494624 [2024-06-28 02:49:12,602 INFO L175 Difference]: Start difference. First operand has 146 places, 129 transitions, 1298 flow. Second operand 9 states and 102 transitions. [2024-06-28 02:49:12,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 144 transitions, 1651 flow [2024-06-28 02:49:12,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 144 transitions, 1604 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-28 02:49:12,665 INFO L231 Difference]: Finished difference. Result has 148 places, 132 transitions, 1338 flow [2024-06-28 02:49:12,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1251, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1338, PETRI_PLACES=148, PETRI_TRANSITIONS=132} [2024-06-28 02:49:12,667 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 118 predicate places. [2024-06-28 02:49:12,667 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 132 transitions, 1338 flow [2024-06-28 02:49:12,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:12,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:12,667 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:12,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 02:49:12,668 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:49:12,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:12,668 INFO L85 PathProgramCache]: Analyzing trace with hash -988895652, now seen corresponding path program 5 times [2024-06-28 02:49:12,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:12,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653211698] [2024-06-28 02:49:12,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:12,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:12,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:13,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:13,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:13,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653211698] [2024-06-28 02:49:13,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653211698] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:13,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:13,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:49:13,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941789355] [2024-06-28 02:49:13,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:13,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:49:13,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:13,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:49:13,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:49:13,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:49:13,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 132 transitions, 1338 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:13,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:13,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:49:13,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:14,114 INFO L124 PetriNetUnfolderBase]: 377/657 cut-off events. [2024-06-28 02:49:14,114 INFO L125 PetriNetUnfolderBase]: For 29733/29733 co-relation queries the response was YES. [2024-06-28 02:49:14,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4687 conditions, 657 events. 377/657 cut-off events. For 29733/29733 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2712 event pairs, 53 based on Foata normal form. 2/657 useless extension candidates. Maximal degree in co-relation 4615. Up to 604 conditions per place. [2024-06-28 02:49:14,118 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 127 selfloop transitions, 19 changer transitions 0/148 dead transitions. [2024-06-28 02:49:14,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 148 transitions, 1694 flow [2024-06-28 02:49:14,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:49:14,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:49:14,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-28 02:49:14,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763440860215054 [2024-06-28 02:49:14,119 INFO L175 Difference]: Start difference. First operand has 148 places, 132 transitions, 1338 flow. Second operand 9 states and 105 transitions. [2024-06-28 02:49:14,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 148 transitions, 1694 flow [2024-06-28 02:49:14,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 148 transitions, 1638 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-28 02:49:14,161 INFO L231 Difference]: Finished difference. Result has 150 places, 134 transitions, 1359 flow [2024-06-28 02:49:14,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1282, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1359, PETRI_PLACES=150, PETRI_TRANSITIONS=134} [2024-06-28 02:49:14,161 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 120 predicate places. [2024-06-28 02:49:14,161 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 134 transitions, 1359 flow [2024-06-28 02:49:14,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:14,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:14,162 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:14,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 02:49:14,162 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:49:14,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:14,162 INFO L85 PathProgramCache]: Analyzing trace with hash -723190932, now seen corresponding path program 6 times [2024-06-28 02:49:14,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:14,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017980397] [2024-06-28 02:49:14,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:14,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:14,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:15,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:15,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:15,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017980397] [2024-06-28 02:49:15,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017980397] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:15,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:15,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:49:15,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758230835] [2024-06-28 02:49:15,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:15,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:49:15,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:15,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:49:15,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:49:15,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:49:15,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 134 transitions, 1359 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:15,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:15,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:49:15,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:15,437 INFO L124 PetriNetUnfolderBase]: 373/651 cut-off events. [2024-06-28 02:49:15,437 INFO L125 PetriNetUnfolderBase]: For 29562/29562 co-relation queries the response was YES. [2024-06-28 02:49:15,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4609 conditions, 651 events. 373/651 cut-off events. For 29562/29562 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2677 event pairs, 54 based on Foata normal form. 2/651 useless extension candidates. Maximal degree in co-relation 4536. Up to 614 conditions per place. [2024-06-28 02:49:15,441 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 130 selfloop transitions, 15 changer transitions 0/147 dead transitions. [2024-06-28 02:49:15,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 147 transitions, 1695 flow [2024-06-28 02:49:15,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:49:15,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:49:15,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-28 02:49:15,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 02:49:15,442 INFO L175 Difference]: Start difference. First operand has 150 places, 134 transitions, 1359 flow. Second operand 9 states and 99 transitions. [2024-06-28 02:49:15,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 147 transitions, 1695 flow [2024-06-28 02:49:15,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 147 transitions, 1638 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-28 02:49:15,485 INFO L231 Difference]: Finished difference. Result has 152 places, 136 transitions, 1363 flow [2024-06-28 02:49:15,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1302, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1363, PETRI_PLACES=152, PETRI_TRANSITIONS=136} [2024-06-28 02:49:15,486 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 122 predicate places. [2024-06-28 02:49:15,486 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 136 transitions, 1363 flow [2024-06-28 02:49:15,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:15,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:15,486 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:15,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 02:49:15,486 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:49:15,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:15,487 INFO L85 PathProgramCache]: Analyzing trace with hash -988895869, now seen corresponding path program 8 times [2024-06-28 02:49:15,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:15,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704511358] [2024-06-28 02:49:15,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:15,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:15,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:16,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:16,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:16,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704511358] [2024-06-28 02:49:16,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704511358] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:16,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:16,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:49:16,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25912185] [2024-06-28 02:49:16,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:16,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:49:16,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:16,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:49:16,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:49:16,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:49:16,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 136 transitions, 1363 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:16,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:16,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:49:16,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:16,607 INFO L124 PetriNetUnfolderBase]: 381/665 cut-off events. [2024-06-28 02:49:16,608 INFO L125 PetriNetUnfolderBase]: For 32385/32385 co-relation queries the response was YES. [2024-06-28 02:49:16,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4643 conditions, 665 events. 381/665 cut-off events. For 32385/32385 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2771 event pairs, 51 based on Foata normal form. 6/669 useless extension candidates. Maximal degree in co-relation 4569. Up to 596 conditions per place. [2024-06-28 02:49:16,612 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 131 selfloop transitions, 22 changer transitions 0/155 dead transitions. [2024-06-28 02:49:16,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 155 transitions, 1779 flow [2024-06-28 02:49:16,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:49:16,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:49:16,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-28 02:49:16,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835125448028674 [2024-06-28 02:49:16,613 INFO L175 Difference]: Start difference. First operand has 152 places, 136 transitions, 1363 flow. Second operand 9 states and 107 transitions. [2024-06-28 02:49:16,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 155 transitions, 1779 flow [2024-06-28 02:49:16,656 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 155 transitions, 1734 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-28 02:49:16,658 INFO L231 Difference]: Finished difference. Result has 154 places, 140 transitions, 1441 flow [2024-06-28 02:49:16,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1318, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1441, PETRI_PLACES=154, PETRI_TRANSITIONS=140} [2024-06-28 02:49:16,658 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 124 predicate places. [2024-06-28 02:49:16,659 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 140 transitions, 1441 flow [2024-06-28 02:49:16,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:16,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:16,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:16,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 02:49:16,660 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:49:16,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:16,660 INFO L85 PathProgramCache]: Analyzing trace with hash -989103259, now seen corresponding path program 9 times [2024-06-28 02:49:16,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:16,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775085535] [2024-06-28 02:49:16,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:16,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:16,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:17,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:17,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:17,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775085535] [2024-06-28 02:49:17,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775085535] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:17,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:17,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:49:17,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170626314] [2024-06-28 02:49:17,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:17,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:49:17,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:17,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:49:17,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:49:17,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:49:17,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 140 transitions, 1441 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:17,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:17,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:49:17,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:17,742 INFO L124 PetriNetUnfolderBase]: 402/699 cut-off events. [2024-06-28 02:49:17,742 INFO L125 PetriNetUnfolderBase]: For 33522/33522 co-relation queries the response was YES. [2024-06-28 02:49:17,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5103 conditions, 699 events. 402/699 cut-off events. For 33522/33522 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2939 event pairs, 50 based on Foata normal form. 2/699 useless extension candidates. Maximal degree in co-relation 5028. Up to 566 conditions per place. [2024-06-28 02:49:17,746 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 119 selfloop transitions, 39 changer transitions 0/160 dead transitions. [2024-06-28 02:49:17,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 160 transitions, 1987 flow [2024-06-28 02:49:17,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:49:17,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:49:17,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-28 02:49:17,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3906810035842294 [2024-06-28 02:49:17,749 INFO L175 Difference]: Start difference. First operand has 154 places, 140 transitions, 1441 flow. Second operand 9 states and 109 transitions. [2024-06-28 02:49:17,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 160 transitions, 1987 flow [2024-06-28 02:49:17,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 160 transitions, 1899 flow, removed 25 selfloop flow, removed 7 redundant places. [2024-06-28 02:49:17,799 INFO L231 Difference]: Finished difference. Result has 157 places, 146 transitions, 1565 flow [2024-06-28 02:49:17,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1353, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1565, PETRI_PLACES=157, PETRI_TRANSITIONS=146} [2024-06-28 02:49:17,799 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 127 predicate places. [2024-06-28 02:49:17,800 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 146 transitions, 1565 flow [2024-06-28 02:49:17,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:17,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:17,800 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:17,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 02:49:17,800 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:49:17,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:17,801 INFO L85 PathProgramCache]: Analyzing trace with hash 621843279, now seen corresponding path program 10 times [2024-06-28 02:49:17,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:17,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991392767] [2024-06-28 02:49:17,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:17,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:17,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:18,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:18,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:18,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991392767] [2024-06-28 02:49:18,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991392767] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:18,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:18,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:49:18,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655629081] [2024-06-28 02:49:18,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:18,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:49:18,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:18,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:49:18,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:49:18,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:49:18,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 146 transitions, 1565 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:18,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:18,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:49:18,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:18,922 INFO L124 PetriNetUnfolderBase]: 403/701 cut-off events. [2024-06-28 02:49:18,922 INFO L125 PetriNetUnfolderBase]: For 34391/34391 co-relation queries the response was YES. [2024-06-28 02:49:18,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5179 conditions, 701 events. 403/701 cut-off events. For 34391/34391 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2960 event pairs, 49 based on Foata normal form. 2/701 useless extension candidates. Maximal degree in co-relation 5102. Up to 569 conditions per place. [2024-06-28 02:49:18,927 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 121 selfloop transitions, 39 changer transitions 0/162 dead transitions. [2024-06-28 02:49:18,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 162 transitions, 2063 flow [2024-06-28 02:49:18,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:49:18,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:49:18,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-28 02:49:18,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3906810035842294 [2024-06-28 02:49:18,928 INFO L175 Difference]: Start difference. First operand has 157 places, 146 transitions, 1565 flow. Second operand 9 states and 109 transitions. [2024-06-28 02:49:18,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 162 transitions, 2063 flow [2024-06-28 02:49:18,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 162 transitions, 1974 flow, removed 30 selfloop flow, removed 5 redundant places. [2024-06-28 02:49:18,985 INFO L231 Difference]: Finished difference. Result has 161 places, 148 transitions, 1598 flow [2024-06-28 02:49:18,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1482, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1598, PETRI_PLACES=161, PETRI_TRANSITIONS=148} [2024-06-28 02:49:18,985 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 131 predicate places. [2024-06-28 02:49:18,986 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 148 transitions, 1598 flow [2024-06-28 02:49:18,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:18,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:18,986 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:18,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 02:49:18,986 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:49:18,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:18,987 INFO L85 PathProgramCache]: Analyzing trace with hash -989097462, now seen corresponding path program 7 times [2024-06-28 02:49:18,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:18,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504660729] [2024-06-28 02:49:18,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:18,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:18,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:19,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:19,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:19,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504660729] [2024-06-28 02:49:19,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504660729] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:19,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:19,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:49:19,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778901479] [2024-06-28 02:49:19,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:19,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:49:19,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:19,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:49:19,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:49:19,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:49:19,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 148 transitions, 1598 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:19,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:19,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:49:19,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:20,237 INFO L124 PetriNetUnfolderBase]: 399/695 cut-off events. [2024-06-28 02:49:20,238 INFO L125 PetriNetUnfolderBase]: For 33839/33839 co-relation queries the response was YES. [2024-06-28 02:49:20,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5101 conditions, 695 events. 399/695 cut-off events. For 33839/33839 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2926 event pairs, 53 based on Foata normal form. 2/695 useless extension candidates. Maximal degree in co-relation 5022. Up to 613 conditions per place. [2024-06-28 02:49:20,242 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 131 selfloop transitions, 27 changer transitions 0/160 dead transitions. [2024-06-28 02:49:20,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 160 transitions, 1942 flow [2024-06-28 02:49:20,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:49:20,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:49:20,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-28 02:49:20,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3727598566308244 [2024-06-28 02:49:20,243 INFO L175 Difference]: Start difference. First operand has 161 places, 148 transitions, 1598 flow. Second operand 9 states and 104 transitions. [2024-06-28 02:49:20,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 160 transitions, 1942 flow [2024-06-28 02:49:20,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 160 transitions, 1863 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-28 02:49:20,301 INFO L231 Difference]: Finished difference. Result has 164 places, 148 transitions, 1578 flow [2024-06-28 02:49:20,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1519, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1578, PETRI_PLACES=164, PETRI_TRANSITIONS=148} [2024-06-28 02:49:20,302 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 134 predicate places. [2024-06-28 02:49:20,302 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 148 transitions, 1578 flow [2024-06-28 02:49:20,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:20,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:20,303 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:20,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 02:49:20,303 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:49:20,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:20,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1645374627, now seen corresponding path program 1 times [2024-06-28 02:49:20,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:20,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940646150] [2024-06-28 02:49:20,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:20,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:20,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:21,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:21,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:21,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940646150] [2024-06-28 02:49:21,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940646150] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:21,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:21,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:49:21,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461439912] [2024-06-28 02:49:21,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:21,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:49:21,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:21,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:49:21,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:49:21,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:49:21,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 148 transitions, 1578 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:21,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:21,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:49:21,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:22,112 INFO L124 PetriNetUnfolderBase]: 410/716 cut-off events. [2024-06-28 02:49:22,112 INFO L125 PetriNetUnfolderBase]: For 37524/37524 co-relation queries the response was YES. [2024-06-28 02:49:22,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5328 conditions, 716 events. 410/716 cut-off events. For 37524/37524 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3061 event pairs, 42 based on Foata normal form. 2/716 useless extension candidates. Maximal degree in co-relation 5248. Up to 623 conditions per place. [2024-06-28 02:49:22,117 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 150 selfloop transitions, 22 changer transitions 0/174 dead transitions. [2024-06-28 02:49:22,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 174 transitions, 2122 flow [2024-06-28 02:49:22,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:49:22,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:49:22,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-28 02:49:22,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375366568914956 [2024-06-28 02:49:22,118 INFO L175 Difference]: Start difference. First operand has 164 places, 148 transitions, 1578 flow. Second operand 11 states and 128 transitions. [2024-06-28 02:49:22,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 174 transitions, 2122 flow [2024-06-28 02:49:22,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 174 transitions, 1994 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-28 02:49:22,180 INFO L231 Difference]: Finished difference. Result has 166 places, 150 transitions, 1540 flow [2024-06-28 02:49:22,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1450, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1540, PETRI_PLACES=166, PETRI_TRANSITIONS=150} [2024-06-28 02:49:22,181 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 136 predicate places. [2024-06-28 02:49:22,181 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 150 transitions, 1540 flow [2024-06-28 02:49:22,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:22,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:22,181 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:22,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 02:49:22,181 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:49:22,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:22,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1253336839, now seen corresponding path program 2 times [2024-06-28 02:49:22,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:22,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89692744] [2024-06-28 02:49:22,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:22,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:22,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:23,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:23,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:23,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89692744] [2024-06-28 02:49:23,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89692744] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:23,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:23,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:49:23,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753836030] [2024-06-28 02:49:23,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:23,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:49:23,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:23,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:49:23,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:49:23,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:49:23,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 150 transitions, 1540 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:23,504 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:23,504 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:49:23,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:23,931 INFO L124 PetriNetUnfolderBase]: 417/729 cut-off events. [2024-06-28 02:49:23,931 INFO L125 PetriNetUnfolderBase]: For 39067/39067 co-relation queries the response was YES. [2024-06-28 02:49:23,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5311 conditions, 729 events. 417/729 cut-off events. For 39067/39067 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3133 event pairs, 59 based on Foata normal form. 2/729 useless extension candidates. Maximal degree in co-relation 5231. Up to 664 conditions per place. [2024-06-28 02:49:23,936 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 150 selfloop transitions, 23 changer transitions 0/175 dead transitions. [2024-06-28 02:49:23,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 175 transitions, 1990 flow [2024-06-28 02:49:23,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:49:23,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:49:23,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-28 02:49:23,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3724340175953079 [2024-06-28 02:49:23,937 INFO L175 Difference]: Start difference. First operand has 166 places, 150 transitions, 1540 flow. Second operand 11 states and 127 transitions. [2024-06-28 02:49:23,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 175 transitions, 1990 flow [2024-06-28 02:49:24,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 175 transitions, 1923 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-28 02:49:24,005 INFO L231 Difference]: Finished difference. Result has 170 places, 153 transitions, 1563 flow [2024-06-28 02:49:24,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1481, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1563, PETRI_PLACES=170, PETRI_TRANSITIONS=153} [2024-06-28 02:49:24,006 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 140 predicate places. [2024-06-28 02:49:24,006 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 153 transitions, 1563 flow [2024-06-28 02:49:24,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:24,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:24,006 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:24,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 02:49:24,006 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:49:24,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:24,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1645256517, now seen corresponding path program 3 times [2024-06-28 02:49:24,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:24,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020653835] [2024-06-28 02:49:24,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:24,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:24,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:25,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:25,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:25,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020653835] [2024-06-28 02:49:25,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020653835] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:25,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:25,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:49:25,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141709240] [2024-06-28 02:49:25,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:25,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:49:25,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:25,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:49:25,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:49:25,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:49:25,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 153 transitions, 1563 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:25,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:25,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:49:25,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:25,753 INFO L124 PetriNetUnfolderBase]: 414/724 cut-off events. [2024-06-28 02:49:25,754 INFO L125 PetriNetUnfolderBase]: For 38651/38651 co-relation queries the response was YES. [2024-06-28 02:49:25,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5191 conditions, 724 events. 414/724 cut-off events. For 38651/38651 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3110 event pairs, 58 based on Foata normal form. 2/724 useless extension candidates. Maximal degree in co-relation 5110. Up to 671 conditions per place. [2024-06-28 02:49:25,759 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 150 selfloop transitions, 19 changer transitions 0/171 dead transitions. [2024-06-28 02:49:25,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 171 transitions, 1953 flow [2024-06-28 02:49:25,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:49:25,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:49:25,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-28 02:49:25,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36774193548387096 [2024-06-28 02:49:25,761 INFO L175 Difference]: Start difference. First operand has 170 places, 153 transitions, 1563 flow. Second operand 10 states and 114 transitions. [2024-06-28 02:49:25,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 171 transitions, 1953 flow [2024-06-28 02:49:25,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 171 transitions, 1887 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-28 02:49:25,836 INFO L231 Difference]: Finished difference. Result has 172 places, 153 transitions, 1539 flow [2024-06-28 02:49:25,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1497, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1539, PETRI_PLACES=172, PETRI_TRANSITIONS=153} [2024-06-28 02:49:25,836 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 142 predicate places. [2024-06-28 02:49:25,836 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 153 transitions, 1539 flow [2024-06-28 02:49:25,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:25,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:25,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:25,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 02:49:25,837 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:49:25,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:25,837 INFO L85 PathProgramCache]: Analyzing trace with hash -737804471, now seen corresponding path program 1 times [2024-06-28 02:49:25,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:25,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732224262] [2024-06-28 02:49:25,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:25,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:25,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:26,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:26,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:26,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732224262] [2024-06-28 02:49:26,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732224262] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:26,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:26,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:49:26,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001828032] [2024-06-28 02:49:26,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:26,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:49:26,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:26,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:49:26,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:49:27,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:49:27,017 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 153 transitions, 1539 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:27,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:27,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:49:27,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:27,405 INFO L124 PetriNetUnfolderBase]: 420/734 cut-off events. [2024-06-28 02:49:27,405 INFO L125 PetriNetUnfolderBase]: For 40096/40096 co-relation queries the response was YES. [2024-06-28 02:49:27,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5220 conditions, 734 events. 420/734 cut-off events. For 40096/40096 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3177 event pairs, 57 based on Foata normal form. 2/734 useless extension candidates. Maximal degree in co-relation 5138. Up to 681 conditions per place. [2024-06-28 02:49:27,410 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 151 selfloop transitions, 20 changer transitions 0/173 dead transitions. [2024-06-28 02:49:27,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 173 transitions, 1961 flow [2024-06-28 02:49:27,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:49:27,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:49:27,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-28 02:49:27,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-28 02:49:27,411 INFO L175 Difference]: Start difference. First operand has 172 places, 153 transitions, 1539 flow. Second operand 10 states and 115 transitions. [2024-06-28 02:49:27,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 173 transitions, 1961 flow [2024-06-28 02:49:27,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 173 transitions, 1907 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-28 02:49:27,493 INFO L231 Difference]: Finished difference. Result has 172 places, 155 transitions, 1562 flow [2024-06-28 02:49:27,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1485, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1562, PETRI_PLACES=172, PETRI_TRANSITIONS=155} [2024-06-28 02:49:27,493 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 142 predicate places. [2024-06-28 02:49:27,493 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 155 transitions, 1562 flow [2024-06-28 02:49:27,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:27,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:27,494 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:27,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 02:49:27,494 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:49:27,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:27,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1135071219, now seen corresponding path program 2 times [2024-06-28 02:49:27,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:27,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281524519] [2024-06-28 02:49:27,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:27,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:27,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:28,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:28,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:28,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281524519] [2024-06-28 02:49:28,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281524519] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:28,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:28,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:49:28,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522827991] [2024-06-28 02:49:28,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:28,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:49:28,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:28,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:49:28,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:49:28,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:49:28,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 155 transitions, 1562 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:28,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:28,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:49:28,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:28,993 INFO L124 PetriNetUnfolderBase]: 456/792 cut-off events. [2024-06-28 02:49:28,994 INFO L125 PetriNetUnfolderBase]: For 49375/49375 co-relation queries the response was YES. [2024-06-28 02:49:28,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5861 conditions, 792 events. 456/792 cut-off events. For 49375/49375 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3506 event pairs, 48 based on Foata normal form. 2/792 useless extension candidates. Maximal degree in co-relation 5778. Up to 479 conditions per place. [2024-06-28 02:49:29,002 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 121 selfloop transitions, 62 changer transitions 0/185 dead transitions. [2024-06-28 02:49:29,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 185 transitions, 2404 flow [2024-06-28 02:49:29,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:49:29,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:49:29,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-28 02:49:29,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4258064516129032 [2024-06-28 02:49:29,004 INFO L175 Difference]: Start difference. First operand has 172 places, 155 transitions, 1562 flow. Second operand 10 states and 132 transitions. [2024-06-28 02:49:29,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 185 transitions, 2404 flow [2024-06-28 02:49:29,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 185 transitions, 2329 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-28 02:49:29,108 INFO L231 Difference]: Finished difference. Result has 173 places, 163 transitions, 1748 flow [2024-06-28 02:49:29,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1487, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1748, PETRI_PLACES=173, PETRI_TRANSITIONS=163} [2024-06-28 02:49:29,108 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 143 predicate places. [2024-06-28 02:49:29,109 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 163 transitions, 1748 flow [2024-06-28 02:49:29,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:29,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:29,109 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:29,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 02:49:29,109 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:49:29,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:29,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1135071405, now seen corresponding path program 1 times [2024-06-28 02:49:29,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:29,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697217362] [2024-06-28 02:49:29,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:29,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:29,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:30,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:30,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:30,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697217362] [2024-06-28 02:49:30,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697217362] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:30,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:30,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:49:30,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795487586] [2024-06-28 02:49:30,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:30,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:49:30,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:30,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:49:30,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:49:30,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:49:30,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 163 transitions, 1748 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:30,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:30,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:49:30,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:30,699 INFO L124 PetriNetUnfolderBase]: 459/797 cut-off events. [2024-06-28 02:49:30,699 INFO L125 PetriNetUnfolderBase]: For 50756/50756 co-relation queries the response was YES. [2024-06-28 02:49:30,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6065 conditions, 797 events. 459/797 cut-off events. For 50756/50756 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3529 event pairs, 51 based on Foata normal form. 1/796 useless extension candidates. Maximal degree in co-relation 5981. Up to 590 conditions per place. [2024-06-28 02:49:30,705 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 117 selfloop transitions, 62 changer transitions 0/181 dead transitions. [2024-06-28 02:49:30,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 181 transitions, 2184 flow [2024-06-28 02:49:30,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:49:30,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:49:30,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 124 transitions. [2024-06-28 02:49:30,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2024-06-28 02:49:30,706 INFO L175 Difference]: Start difference. First operand has 173 places, 163 transitions, 1748 flow. Second operand 10 states and 124 transitions. [2024-06-28 02:49:30,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 181 transitions, 2184 flow [2024-06-28 02:49:30,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 181 transitions, 2097 flow, removed 28 selfloop flow, removed 4 redundant places. [2024-06-28 02:49:30,801 INFO L231 Difference]: Finished difference. Result has 179 places, 165 transitions, 1830 flow [2024-06-28 02:49:30,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1661, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1830, PETRI_PLACES=179, PETRI_TRANSITIONS=165} [2024-06-28 02:49:30,801 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 149 predicate places. [2024-06-28 02:49:30,801 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 165 transitions, 1830 flow [2024-06-28 02:49:30,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:30,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:30,801 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:30,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 02:49:30,802 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:49:30,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:30,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1961373111, now seen corresponding path program 3 times [2024-06-28 02:49:30,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:30,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104945894] [2024-06-28 02:49:30,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:30,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:30,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:31,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:31,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:31,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104945894] [2024-06-28 02:49:31,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104945894] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:31,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:31,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:49:31,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401852814] [2024-06-28 02:49:31,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:31,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:49:31,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:31,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:49:31,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:49:31,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:49:31,886 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 165 transitions, 1830 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:31,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:31,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:49:31,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:32,283 INFO L124 PetriNetUnfolderBase]: 455/791 cut-off events. [2024-06-28 02:49:32,283 INFO L125 PetriNetUnfolderBase]: For 51277/51277 co-relation queries the response was YES. [2024-06-28 02:49:32,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6065 conditions, 791 events. 455/791 cut-off events. For 51277/51277 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3508 event pairs, 46 based on Foata normal form. 2/791 useless extension candidates. Maximal degree in co-relation 5979. Up to 481 conditions per place. [2024-06-28 02:49:32,288 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 119 selfloop transitions, 64 changer transitions 0/185 dead transitions. [2024-06-28 02:49:32,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 185 transitions, 2450 flow [2024-06-28 02:49:32,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:49:32,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:49:32,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-28 02:49:32,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4161290322580645 [2024-06-28 02:49:32,289 INFO L175 Difference]: Start difference. First operand has 179 places, 165 transitions, 1830 flow. Second operand 10 states and 129 transitions. [2024-06-28 02:49:32,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 185 transitions, 2450 flow [2024-06-28 02:49:32,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 185 transitions, 2285 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-28 02:49:32,384 INFO L231 Difference]: Finished difference. Result has 181 places, 165 transitions, 1798 flow [2024-06-28 02:49:32,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1665, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1798, PETRI_PLACES=181, PETRI_TRANSITIONS=165} [2024-06-28 02:49:32,384 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 151 predicate places. [2024-06-28 02:49:32,384 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 165 transitions, 1798 flow [2024-06-28 02:49:32,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:32,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:32,385 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:32,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 02:49:32,385 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:49:32,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:32,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1135244199, now seen corresponding path program 4 times [2024-06-28 02:49:32,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:32,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562911920] [2024-06-28 02:49:32,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:32,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:32,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:33,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:33,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:33,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562911920] [2024-06-28 02:49:33,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562911920] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:33,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:33,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:49:33,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702619991] [2024-06-28 02:49:33,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:33,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:49:33,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:33,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:49:33,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:49:33,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:49:33,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 165 transitions, 1798 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:33,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:33,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:49:33,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:33,842 INFO L124 PetriNetUnfolderBase]: 451/785 cut-off events. [2024-06-28 02:49:33,843 INFO L125 PetriNetUnfolderBase]: For 50436/50436 co-relation queries the response was YES. [2024-06-28 02:49:33,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5953 conditions, 785 events. 451/785 cut-off events. For 50436/50436 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3473 event pairs, 45 based on Foata normal form. 2/785 useless extension candidates. Maximal degree in co-relation 5866. Up to 478 conditions per place. [2024-06-28 02:49:33,849 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 122 selfloop transitions, 61 changer transitions 0/185 dead transitions. [2024-06-28 02:49:33,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 185 transitions, 2318 flow [2024-06-28 02:49:33,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:49:33,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:49:33,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-28 02:49:33,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42258064516129035 [2024-06-28 02:49:33,851 INFO L175 Difference]: Start difference. First operand has 181 places, 165 transitions, 1798 flow. Second operand 10 states and 131 transitions. [2024-06-28 02:49:33,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 185 transitions, 2318 flow [2024-06-28 02:49:33,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 185 transitions, 2219 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-28 02:49:33,953 INFO L231 Difference]: Finished difference. Result has 184 places, 165 transitions, 1826 flow [2024-06-28 02:49:33,953 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1699, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1826, PETRI_PLACES=184, PETRI_TRANSITIONS=165} [2024-06-28 02:49:33,954 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 154 predicate places. [2024-06-28 02:49:33,954 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 165 transitions, 1826 flow [2024-06-28 02:49:33,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:33,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:33,954 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:33,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 02:49:33,954 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:49:33,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:33,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1807403117, now seen corresponding path program 2 times [2024-06-28 02:49:33,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:33,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23024998] [2024-06-28 02:49:33,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:33,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:33,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:35,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:35,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:35,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23024998] [2024-06-28 02:49:35,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23024998] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:35,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:35,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:49:35,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406820522] [2024-06-28 02:49:35,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:35,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:49:35,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:35,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:49:35,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:49:36,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:49:36,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 165 transitions, 1826 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:36,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:36,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:49:36,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:36,394 INFO L124 PetriNetUnfolderBase]: 454/790 cut-off events. [2024-06-28 02:49:36,394 INFO L125 PetriNetUnfolderBase]: For 51285/51285 co-relation queries the response was YES. [2024-06-28 02:49:36,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6055 conditions, 790 events. 454/790 cut-off events. For 51285/51285 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3513 event pairs, 47 based on Foata normal form. 1/789 useless extension candidates. Maximal degree in co-relation 5967. Up to 583 conditions per place. [2024-06-28 02:49:36,400 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 120 selfloop transitions, 61 changer transitions 0/183 dead transitions. [2024-06-28 02:49:36,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 183 transitions, 2270 flow [2024-06-28 02:49:36,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:49:36,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:49:36,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-28 02:49:36,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-28 02:49:36,401 INFO L175 Difference]: Start difference. First operand has 184 places, 165 transitions, 1826 flow. Second operand 10 states and 125 transitions. [2024-06-28 02:49:36,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 183 transitions, 2270 flow [2024-06-28 02:49:36,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 183 transitions, 2121 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 02:49:36,507 INFO L231 Difference]: Finished difference. Result has 184 places, 167 transitions, 1848 flow [2024-06-28 02:49:36,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1677, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1848, PETRI_PLACES=184, PETRI_TRANSITIONS=167} [2024-06-28 02:49:36,508 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 154 predicate places. [2024-06-28 02:49:36,508 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 167 transitions, 1848 flow [2024-06-28 02:49:36,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:36,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:36,509 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:36,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 02:49:36,509 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:49:36,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:36,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1807398467, now seen corresponding path program 3 times [2024-06-28 02:49:36,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:36,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525240938] [2024-06-28 02:49:36,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:36,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:36,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:37,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:37,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:37,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525240938] [2024-06-28 02:49:37,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525240938] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:37,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:37,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:49:37,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040384587] [2024-06-28 02:49:37,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:37,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:49:37,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:37,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:49:37,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:49:38,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:49:38,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 167 transitions, 1848 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:38,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:38,086 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:49:38,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:38,432 INFO L124 PetriNetUnfolderBase]: 452/787 cut-off events. [2024-06-28 02:49:38,432 INFO L125 PetriNetUnfolderBase]: For 51609/51609 co-relation queries the response was YES. [2024-06-28 02:49:38,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6002 conditions, 787 events. 452/787 cut-off events. For 51609/51609 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3496 event pairs, 47 based on Foata normal form. 1/786 useless extension candidates. Maximal degree in co-relation 5913. Up to 571 conditions per place. [2024-06-28 02:49:38,437 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 117 selfloop transitions, 66 changer transitions 0/185 dead transitions. [2024-06-28 02:49:38,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 185 transitions, 2300 flow [2024-06-28 02:49:38,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:49:38,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:49:38,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-28 02:49:38,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4064516129032258 [2024-06-28 02:49:38,438 INFO L175 Difference]: Start difference. First operand has 184 places, 167 transitions, 1848 flow. Second operand 10 states and 126 transitions. [2024-06-28 02:49:38,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 185 transitions, 2300 flow [2024-06-28 02:49:38,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 185 transitions, 2145 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-28 02:49:38,531 INFO L231 Difference]: Finished difference. Result has 186 places, 169 transitions, 1878 flow [2024-06-28 02:49:38,531 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1693, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1878, PETRI_PLACES=186, PETRI_TRANSITIONS=169} [2024-06-28 02:49:38,531 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 156 predicate places. [2024-06-28 02:49:38,531 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 169 transitions, 1878 flow [2024-06-28 02:49:38,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:38,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:38,532 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:38,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 02:49:38,532 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:49:38,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:38,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1807398343, now seen corresponding path program 4 times [2024-06-28 02:49:38,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:38,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894873760] [2024-06-28 02:49:38,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:38,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:38,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:39,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:39,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:39,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894873760] [2024-06-28 02:49:39,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894873760] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:39,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:39,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:49:39,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906355021] [2024-06-28 02:49:39,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:39,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:49:39,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:39,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:49:39,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:49:39,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:49:39,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 169 transitions, 1878 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:39,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:39,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:49:39,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:40,178 INFO L124 PetriNetUnfolderBase]: 456/795 cut-off events. [2024-06-28 02:49:40,178 INFO L125 PetriNetUnfolderBase]: For 54824/54824 co-relation queries the response was YES. [2024-06-28 02:49:40,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6089 conditions, 795 events. 456/795 cut-off events. For 54824/54824 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3517 event pairs, 66 based on Foata normal form. 2/795 useless extension candidates. Maximal degree in co-relation 5999. Up to 710 conditions per place. [2024-06-28 02:49:40,183 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 150 selfloop transitions, 33 changer transitions 0/185 dead transitions. [2024-06-28 02:49:40,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 185 transitions, 2306 flow [2024-06-28 02:49:40,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:49:40,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:49:40,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-28 02:49:40,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3741935483870968 [2024-06-28 02:49:40,185 INFO L175 Difference]: Start difference. First operand has 186 places, 169 transitions, 1878 flow. Second operand 10 states and 116 transitions. [2024-06-28 02:49:40,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 185 transitions, 2306 flow [2024-06-28 02:49:40,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 185 transitions, 2137 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-28 02:49:40,293 INFO L231 Difference]: Finished difference. Result has 188 places, 170 transitions, 1803 flow [2024-06-28 02:49:40,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1709, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1803, PETRI_PLACES=188, PETRI_TRANSITIONS=170} [2024-06-28 02:49:40,294 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 158 predicate places. [2024-06-28 02:49:40,294 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 170 transitions, 1803 flow [2024-06-28 02:49:40,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:40,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:40,294 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:40,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 02:49:40,294 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:49:40,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:40,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1979717605, now seen corresponding path program 1 times [2024-06-28 02:49:40,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:40,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892438863] [2024-06-28 02:49:40,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:40,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:40,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:41,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:41,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:41,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892438863] [2024-06-28 02:49:41,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892438863] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:41,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:41,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 02:49:41,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636773129] [2024-06-28 02:49:41,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:41,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 02:49:41,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:41,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 02:49:41,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 02:49:41,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:49:41,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 170 transitions, 1803 flow. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:41,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:41,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:49:41,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:41,764 INFO L124 PetriNetUnfolderBase]: 460/803 cut-off events. [2024-06-28 02:49:41,764 INFO L125 PetriNetUnfolderBase]: For 56445/56445 co-relation queries the response was YES. [2024-06-28 02:49:41,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6038 conditions, 803 events. 460/803 cut-off events. For 56445/56445 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 3596 event pairs, 58 based on Foata normal form. 2/803 useless extension candidates. Maximal degree in co-relation 5947. Up to 733 conditions per place. [2024-06-28 02:49:41,770 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 158 selfloop transitions, 26 changer transitions 0/186 dead transitions. [2024-06-28 02:49:41,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 186 transitions, 2232 flow [2024-06-28 02:49:41,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:49:41,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:49:41,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-28 02:49:41,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37992831541218636 [2024-06-28 02:49:41,771 INFO L175 Difference]: Start difference. First operand has 188 places, 170 transitions, 1803 flow. Second operand 9 states and 106 transitions. [2024-06-28 02:49:41,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 186 transitions, 2232 flow [2024-06-28 02:49:41,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 186 transitions, 2148 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-28 02:49:41,874 INFO L231 Difference]: Finished difference. Result has 190 places, 173 transitions, 1814 flow [2024-06-28 02:49:41,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1719, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1814, PETRI_PLACES=190, PETRI_TRANSITIONS=173} [2024-06-28 02:49:41,875 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 160 predicate places. [2024-06-28 02:49:41,875 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 173 transitions, 1814 flow [2024-06-28 02:49:41,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 10 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:41,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:41,876 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:41,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 02:49:41,876 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:49:41,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:41,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1979471341, now seen corresponding path program 4 times [2024-06-28 02:49:41,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:41,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607741122] [2024-06-28 02:49:41,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:41,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:41,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:43,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:43,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:43,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607741122] [2024-06-28 02:49:43,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607741122] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:43,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:43,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:49:43,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66953934] [2024-06-28 02:49:43,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:43,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:49:43,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:43,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:49:43,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:49:43,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:49:43,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 173 transitions, 1814 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:43,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:43,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:49:43,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:43,619 INFO L124 PetriNetUnfolderBase]: 459/802 cut-off events. [2024-06-28 02:49:43,619 INFO L125 PetriNetUnfolderBase]: For 56523/56523 co-relation queries the response was YES. [2024-06-28 02:49:43,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5934 conditions, 802 events. 459/802 cut-off events. For 56523/56523 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3611 event pairs, 53 based on Foata normal form. 3/803 useless extension candidates. Maximal degree in co-relation 5841. Up to 705 conditions per place. [2024-06-28 02:49:43,624 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 156 selfloop transitions, 33 changer transitions 0/191 dead transitions. [2024-06-28 02:49:43,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 191 transitions, 2256 flow [2024-06-28 02:49:43,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:49:43,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:49:43,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-28 02:49:43,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3935483870967742 [2024-06-28 02:49:43,626 INFO L175 Difference]: Start difference. First operand has 190 places, 173 transitions, 1814 flow. Second operand 10 states and 122 transitions. [2024-06-28 02:49:43,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 191 transitions, 2256 flow [2024-06-28 02:49:43,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 191 transitions, 2196 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 02:49:43,731 INFO L231 Difference]: Finished difference. Result has 194 places, 175 transitions, 1858 flow [2024-06-28 02:49:43,732 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1754, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1858, PETRI_PLACES=194, PETRI_TRANSITIONS=175} [2024-06-28 02:49:43,732 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 164 predicate places. [2024-06-28 02:49:43,732 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 175 transitions, 1858 flow [2024-06-28 02:49:43,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:43,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:43,732 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:43,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 02:49:43,732 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:49:43,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:43,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1979471527, now seen corresponding path program 5 times [2024-06-28 02:49:43,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:43,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770346633] [2024-06-28 02:49:43,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:43,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:43,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:45,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:45,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:45,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770346633] [2024-06-28 02:49:45,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770346633] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:45,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:45,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:49:45,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180332732] [2024-06-28 02:49:45,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:45,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:49:45,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:45,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:49:45,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:49:45,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:49:45,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 175 transitions, 1858 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:45,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:45,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:49:45,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:45,672 INFO L124 PetriNetUnfolderBase]: 475/828 cut-off events. [2024-06-28 02:49:45,673 INFO L125 PetriNetUnfolderBase]: For 60542/60542 co-relation queries the response was YES. [2024-06-28 02:49:45,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6250 conditions, 828 events. 475/828 cut-off events. For 60542/60542 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 3768 event pairs, 53 based on Foata normal form. 2/828 useless extension candidates. Maximal degree in co-relation 6156. Up to 719 conditions per place. [2024-06-28 02:49:45,682 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 159 selfloop transitions, 35 changer transitions 0/196 dead transitions. [2024-06-28 02:49:45,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 196 transitions, 2472 flow [2024-06-28 02:49:45,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:49:45,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:49:45,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-28 02:49:45,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3935483870967742 [2024-06-28 02:49:45,683 INFO L175 Difference]: Start difference. First operand has 194 places, 175 transitions, 1858 flow. Second operand 10 states and 122 transitions. [2024-06-28 02:49:45,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 196 transitions, 2472 flow [2024-06-28 02:49:45,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 196 transitions, 2386 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-28 02:49:45,816 INFO L231 Difference]: Finished difference. Result has 196 places, 179 transitions, 1923 flow [2024-06-28 02:49:45,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1772, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1923, PETRI_PLACES=196, PETRI_TRANSITIONS=179} [2024-06-28 02:49:45,817 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 166 predicate places. [2024-06-28 02:49:45,817 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 179 transitions, 1923 flow [2024-06-28 02:49:45,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:45,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:45,817 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:45,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 02:49:45,818 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:49:45,818 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:45,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1973042437, now seen corresponding path program 6 times [2024-06-28 02:49:45,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:45,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82973509] [2024-06-28 02:49:45,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:45,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:45,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:46,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:46,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:46,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82973509] [2024-06-28 02:49:46,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82973509] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:46,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:46,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:49:46,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353368687] [2024-06-28 02:49:46,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:46,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:49:46,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:46,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:49:46,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:49:46,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:49:46,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 179 transitions, 1923 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:46,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:46,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:49:46,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:47,291 INFO L124 PetriNetUnfolderBase]: 491/854 cut-off events. [2024-06-28 02:49:47,291 INFO L125 PetriNetUnfolderBase]: For 66279/66279 co-relation queries the response was YES. [2024-06-28 02:49:47,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6545 conditions, 854 events. 491/854 cut-off events. For 66279/66279 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 3908 event pairs, 53 based on Foata normal form. 2/854 useless extension candidates. Maximal degree in co-relation 6450. Up to 703 conditions per place. [2024-06-28 02:49:47,297 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 153 selfloop transitions, 45 changer transitions 0/200 dead transitions. [2024-06-28 02:49:47,297 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 200 transitions, 2555 flow [2024-06-28 02:49:47,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:49:47,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:49:47,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-28 02:49:47,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-28 02:49:47,298 INFO L175 Difference]: Start difference. First operand has 196 places, 179 transitions, 1923 flow. Second operand 10 states and 125 transitions. [2024-06-28 02:49:47,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 200 transitions, 2555 flow [2024-06-28 02:49:47,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 200 transitions, 2482 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-28 02:49:47,423 INFO L231 Difference]: Finished difference. Result has 200 places, 183 transitions, 2029 flow [2024-06-28 02:49:47,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1850, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2029, PETRI_PLACES=200, PETRI_TRANSITIONS=183} [2024-06-28 02:49:47,424 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 170 predicate places. [2024-06-28 02:49:47,424 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 183 transitions, 2029 flow [2024-06-28 02:49:47,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:47,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:47,425 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:47,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 02:49:47,425 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:49:47,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:47,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1979478037, now seen corresponding path program 7 times [2024-06-28 02:49:47,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:47,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058443691] [2024-06-28 02:49:47,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:47,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:47,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:48,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:48,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:48,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058443691] [2024-06-28 02:49:48,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058443691] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:48,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:48,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:49:48,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995743140] [2024-06-28 02:49:48,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:48,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:49:48,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:48,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:49:48,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:49:48,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:49:48,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 183 transitions, 2029 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:48,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:48,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:49:48,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:48,952 INFO L124 PetriNetUnfolderBase]: 507/880 cut-off events. [2024-06-28 02:49:48,952 INFO L125 PetriNetUnfolderBase]: For 72842/72842 co-relation queries the response was YES. [2024-06-28 02:49:48,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7019 conditions, 880 events. 507/880 cut-off events. For 72842/72842 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4041 event pairs, 57 based on Foata normal form. 2/880 useless extension candidates. Maximal degree in co-relation 6922. Up to 739 conditions per place. [2024-06-28 02:49:48,962 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 162 selfloop transitions, 41 changer transitions 0/205 dead transitions. [2024-06-28 02:49:48,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 205 transitions, 2819 flow [2024-06-28 02:49:48,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:49:48,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:49:48,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-28 02:49:48,963 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4064516129032258 [2024-06-28 02:49:48,963 INFO L175 Difference]: Start difference. First operand has 200 places, 183 transitions, 2029 flow. Second operand 10 states and 126 transitions. [2024-06-28 02:49:48,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 205 transitions, 2819 flow [2024-06-28 02:49:49,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 205 transitions, 2720 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-28 02:49:49,096 INFO L231 Difference]: Finished difference. Result has 204 places, 187 transitions, 2125 flow [2024-06-28 02:49:49,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1930, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2125, PETRI_PLACES=204, PETRI_TRANSITIONS=187} [2024-06-28 02:49:49,097 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 174 predicate places. [2024-06-28 02:49:49,097 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 187 transitions, 2125 flow [2024-06-28 02:49:49,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:49,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:49,097 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:49,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 02:49:49,098 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:49:49,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:49,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1973037477, now seen corresponding path program 5 times [2024-06-28 02:49:49,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:49,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584215311] [2024-06-28 02:49:49,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:49,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:49,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:50,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:50,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:50,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584215311] [2024-06-28 02:49:50,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584215311] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:50,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:50,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:49:50,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910547071] [2024-06-28 02:49:50,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:50,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:49:50,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:50,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:49:50,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:49:50,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:49:50,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 187 transitions, 2125 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:50,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:50,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:49:50,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:50,772 INFO L124 PetriNetUnfolderBase]: 511/888 cut-off events. [2024-06-28 02:49:50,772 INFO L125 PetriNetUnfolderBase]: For 75098/75098 co-relation queries the response was YES. [2024-06-28 02:49:50,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7161 conditions, 888 events. 511/888 cut-off events. For 75098/75098 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4089 event pairs, 73 based on Foata normal form. 2/888 useless extension candidates. Maximal degree in co-relation 7062. Up to 839 conditions per place. [2024-06-28 02:49:50,782 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 174 selfloop transitions, 24 changer transitions 0/200 dead transitions. [2024-06-28 02:49:50,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 200 transitions, 2573 flow [2024-06-28 02:49:50,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:49:50,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:49:50,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-28 02:49:50,783 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 02:49:50,783 INFO L175 Difference]: Start difference. First operand has 204 places, 187 transitions, 2125 flow. Second operand 10 states and 110 transitions. [2024-06-28 02:49:50,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 200 transitions, 2573 flow [2024-06-28 02:49:50,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 200 transitions, 2507 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-28 02:49:50,919 INFO L231 Difference]: Finished difference. Result has 208 places, 188 transitions, 2137 flow [2024-06-28 02:49:50,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2059, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2137, PETRI_PLACES=208, PETRI_TRANSITIONS=188} [2024-06-28 02:49:50,919 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 178 predicate places. [2024-06-28 02:49:50,919 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 188 transitions, 2137 flow [2024-06-28 02:49:50,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:50,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:50,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:50,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 02:49:50,920 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:49:50,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:50,920 INFO L85 PathProgramCache]: Analyzing trace with hash -969425575, now seen corresponding path program 8 times [2024-06-28 02:49:50,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:50,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857342475] [2024-06-28 02:49:50,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:50,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:50,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:51,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:51,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:51,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857342475] [2024-06-28 02:49:51,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857342475] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:51,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:51,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:49:51,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517101806] [2024-06-28 02:49:51,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:51,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:49:51,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:51,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:49:51,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:49:52,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:49:52,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 188 transitions, 2137 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:52,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:52,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:49:52,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:52,565 INFO L124 PetriNetUnfolderBase]: 517/898 cut-off events. [2024-06-28 02:49:52,565 INFO L125 PetriNetUnfolderBase]: For 77404/77404 co-relation queries the response was YES. [2024-06-28 02:49:52,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7248 conditions, 898 events. 517/898 cut-off events. For 77404/77404 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4161 event pairs, 58 based on Foata normal form. 2/898 useless extension candidates. Maximal degree in co-relation 7147. Up to 746 conditions per place. [2024-06-28 02:49:52,574 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 159 selfloop transitions, 46 changer transitions 0/207 dead transitions. [2024-06-28 02:49:52,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 207 transitions, 2747 flow [2024-06-28 02:49:52,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:49:52,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:49:52,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-28 02:49:52,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4064516129032258 [2024-06-28 02:49:52,575 INFO L175 Difference]: Start difference. First operand has 208 places, 188 transitions, 2137 flow. Second operand 10 states and 126 transitions. [2024-06-28 02:49:52,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 207 transitions, 2747 flow [2024-06-28 02:49:52,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 207 transitions, 2667 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-28 02:49:52,693 INFO L231 Difference]: Finished difference. Result has 210 places, 190 transitions, 2192 flow [2024-06-28 02:49:52,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2057, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2192, PETRI_PLACES=210, PETRI_TRANSITIONS=190} [2024-06-28 02:49:52,694 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 180 predicate places. [2024-06-28 02:49:52,694 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 190 transitions, 2192 flow [2024-06-28 02:49:52,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:52,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:52,695 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:52,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 02:49:52,695 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:49:52,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:52,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1973215417, now seen corresponding path program 9 times [2024-06-28 02:49:52,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:52,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710989447] [2024-06-28 02:49:52,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:52,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:52,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:53,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:53,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:53,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710989447] [2024-06-28 02:49:53,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710989447] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:53,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:53,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:49:53,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382093066] [2024-06-28 02:49:53,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:53,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:49:53,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:53,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:49:53,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:49:53,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:49:53,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 190 transitions, 2192 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:53,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:53,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:49:53,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:54,218 INFO L124 PetriNetUnfolderBase]: 513/892 cut-off events. [2024-06-28 02:49:54,218 INFO L125 PetriNetUnfolderBase]: For 75785/75785 co-relation queries the response was YES. [2024-06-28 02:49:54,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7147 conditions, 892 events. 513/892 cut-off events. For 75785/75785 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4129 event pairs, 59 based on Foata normal form. 2/892 useless extension candidates. Maximal degree in co-relation 7045. Up to 743 conditions per place. [2024-06-28 02:49:54,229 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 160 selfloop transitions, 45 changer transitions 0/207 dead transitions. [2024-06-28 02:49:54,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 207 transitions, 2640 flow [2024-06-28 02:49:54,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:49:54,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:49:54,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 127 transitions. [2024-06-28 02:49:54,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4096774193548387 [2024-06-28 02:49:54,231 INFO L175 Difference]: Start difference. First operand has 210 places, 190 transitions, 2192 flow. Second operand 10 states and 127 transitions. [2024-06-28 02:49:54,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 207 transitions, 2640 flow [2024-06-28 02:49:54,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 207 transitions, 2491 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-28 02:49:54,371 INFO L231 Difference]: Finished difference. Result has 212 places, 190 transitions, 2138 flow [2024-06-28 02:49:54,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2043, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2138, PETRI_PLACES=212, PETRI_TRANSITIONS=190} [2024-06-28 02:49:54,372 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 182 predicate places. [2024-06-28 02:49:54,372 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 190 transitions, 2138 flow [2024-06-28 02:49:54,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:54,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:54,372 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:54,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 02:49:54,373 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:49:54,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:54,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1973215231, now seen corresponding path program 5 times [2024-06-28 02:49:54,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:54,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49171555] [2024-06-28 02:49:54,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:54,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:54,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:55,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:55,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:55,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49171555] [2024-06-28 02:49:55,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49171555] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:55,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:55,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:49:55,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294411180] [2024-06-28 02:49:55,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:55,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:49:55,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:55,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:49:55,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:49:55,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:49:55,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 190 transitions, 2138 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:55,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:55,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:49:55,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:56,002 INFO L124 PetriNetUnfolderBase]: 511/889 cut-off events. [2024-06-28 02:49:56,002 INFO L125 PetriNetUnfolderBase]: For 73424/73424 co-relation queries the response was YES. [2024-06-28 02:49:56,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6988 conditions, 889 events. 511/889 cut-off events. For 73424/73424 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4107 event pairs, 63 based on Foata normal form. 1/888 useless extension candidates. Maximal degree in co-relation 6886. Up to 783 conditions per place. [2024-06-28 02:49:56,040 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 164 selfloop transitions, 38 changer transitions 0/204 dead transitions. [2024-06-28 02:49:56,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 204 transitions, 2574 flow [2024-06-28 02:49:56,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:49:56,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:49:56,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-28 02:49:56,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3935483870967742 [2024-06-28 02:49:56,042 INFO L175 Difference]: Start difference. First operand has 212 places, 190 transitions, 2138 flow. Second operand 10 states and 122 transitions. [2024-06-28 02:49:56,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 204 transitions, 2574 flow [2024-06-28 02:49:56,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 204 transitions, 2446 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-06-28 02:49:56,184 INFO L231 Difference]: Finished difference. Result has 212 places, 190 transitions, 2091 flow [2024-06-28 02:49:56,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2010, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2091, PETRI_PLACES=212, PETRI_TRANSITIONS=190} [2024-06-28 02:49:56,184 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 182 predicate places. [2024-06-28 02:49:56,184 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 190 transitions, 2091 flow [2024-06-28 02:49:56,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:56,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:56,185 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:56,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 02:49:56,185 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:49:56,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:56,186 INFO L85 PathProgramCache]: Analyzing trace with hash 164212215, now seen corresponding path program 10 times [2024-06-28 02:49:56,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:56,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363652239] [2024-06-28 02:49:56,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:56,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:56,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:57,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:57,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:57,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363652239] [2024-06-28 02:49:57,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363652239] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:57,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:57,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:49:57,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383581821] [2024-06-28 02:49:57,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:57,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:49:57,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:57,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:49:57,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:49:57,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:49:57,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 190 transitions, 2091 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:57,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:57,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:49:57,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:49:57,978 INFO L124 PetriNetUnfolderBase]: 547/947 cut-off events. [2024-06-28 02:49:57,979 INFO L125 PetriNetUnfolderBase]: For 91475/91475 co-relation queries the response was YES. [2024-06-28 02:49:57,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7814 conditions, 947 events. 547/947 cut-off events. For 91475/91475 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4424 event pairs, 65 based on Foata normal form. 2/947 useless extension candidates. Maximal degree in co-relation 7711. Up to 829 conditions per place. [2024-06-28 02:49:57,990 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 183 selfloop transitions, 31 changer transitions 0/216 dead transitions. [2024-06-28 02:49:57,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 216 transitions, 3027 flow [2024-06-28 02:49:57,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:49:57,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:49:57,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-28 02:49:57,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3903225806451613 [2024-06-28 02:49:57,991 INFO L175 Difference]: Start difference. First operand has 212 places, 190 transitions, 2091 flow. Second operand 10 states and 121 transitions. [2024-06-28 02:49:57,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 216 transitions, 3027 flow [2024-06-28 02:49:58,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 216 transitions, 2932 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-28 02:49:58,158 INFO L231 Difference]: Finished difference. Result has 213 places, 198 transitions, 2263 flow [2024-06-28 02:49:58,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1996, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2263, PETRI_PLACES=213, PETRI_TRANSITIONS=198} [2024-06-28 02:49:58,159 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 183 predicate places. [2024-06-28 02:49:58,159 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 198 transitions, 2263 flow [2024-06-28 02:49:58,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:58,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:49:58,160 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:49:58,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 02:49:58,160 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:49:58,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:49:58,160 INFO L85 PathProgramCache]: Analyzing trace with hash -590999897, now seen corresponding path program 11 times [2024-06-28 02:49:58,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:49:58,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397719328] [2024-06-28 02:49:58,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:49:58,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:49:58,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:49:59,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:49:59,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:49:59,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397719328] [2024-06-28 02:49:59,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397719328] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:49:59,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:49:59,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:49:59,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233633517] [2024-06-28 02:49:59,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:49:59,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:49:59,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:49:59,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:49:59,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:49:59,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:49:59,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 198 transitions, 2263 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:49:59,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:49:59,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:49:59,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:00,286 INFO L124 PetriNetUnfolderBase]: 543/941 cut-off events. [2024-06-28 02:50:00,287 INFO L125 PetriNetUnfolderBase]: For 90179/90179 co-relation queries the response was YES. [2024-06-28 02:50:00,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7709 conditions, 941 events. 543/941 cut-off events. For 90179/90179 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4396 event pairs, 64 based on Foata normal form. 2/941 useless extension candidates. Maximal degree in co-relation 7605. Up to 863 conditions per place. [2024-06-28 02:50:00,294 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 187 selfloop transitions, 25 changer transitions 0/214 dead transitions. [2024-06-28 02:50:00,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 214 transitions, 2739 flow [2024-06-28 02:50:00,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:50:00,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:50:00,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-28 02:50:00,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3741935483870968 [2024-06-28 02:50:00,295 INFO L175 Difference]: Start difference. First operand has 213 places, 198 transitions, 2263 flow. Second operand 10 states and 116 transitions. [2024-06-28 02:50:00,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 214 transitions, 2739 flow [2024-06-28 02:50:00,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 214 transitions, 2646 flow, removed 37 selfloop flow, removed 5 redundant places. [2024-06-28 02:50:00,490 INFO L231 Difference]: Finished difference. Result has 219 places, 199 transitions, 2250 flow [2024-06-28 02:50:00,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2170, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2250, PETRI_PLACES=219, PETRI_TRANSITIONS=199} [2024-06-28 02:50:00,491 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 189 predicate places. [2024-06-28 02:50:00,491 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 199 transitions, 2250 flow [2024-06-28 02:50:00,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:00,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:00,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:00,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 02:50:00,491 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:50:00,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:00,492 INFO L85 PathProgramCache]: Analyzing trace with hash -597433947, now seen corresponding path program 6 times [2024-06-28 02:50:00,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:00,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609017014] [2024-06-28 02:50:00,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:00,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:00,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:01,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:01,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:01,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609017014] [2024-06-28 02:50:01,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609017014] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:01,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:01,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:50:01,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408451626] [2024-06-28 02:50:01,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:01,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:50:01,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:01,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:50:01,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:50:01,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:50:01,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 199 transitions, 2250 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:01,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:01,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:50:01,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:02,295 INFO L124 PetriNetUnfolderBase]: 540/936 cut-off events. [2024-06-28 02:50:02,295 INFO L125 PetriNetUnfolderBase]: For 87478/87478 co-relation queries the response was YES. [2024-06-28 02:50:02,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7551 conditions, 936 events. 540/936 cut-off events. For 87478/87478 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4358 event pairs, 77 based on Foata normal form. 2/936 useless extension candidates. Maximal degree in co-relation 7444. Up to 906 conditions per place. [2024-06-28 02:50:02,302 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 191 selfloop transitions, 16 changer transitions 0/209 dead transitions. [2024-06-28 02:50:02,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 209 transitions, 2686 flow [2024-06-28 02:50:02,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:50:02,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:50:02,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-28 02:50:02,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-28 02:50:02,303 INFO L175 Difference]: Start difference. First operand has 219 places, 199 transitions, 2250 flow. Second operand 10 states and 105 transitions. [2024-06-28 02:50:02,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 209 transitions, 2686 flow [2024-06-28 02:50:02,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 209 transitions, 2614 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-28 02:50:02,477 INFO L231 Difference]: Finished difference. Result has 222 places, 199 transitions, 2214 flow [2024-06-28 02:50:02,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2178, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2214, PETRI_PLACES=222, PETRI_TRANSITIONS=199} [2024-06-28 02:50:02,477 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 192 predicate places. [2024-06-28 02:50:02,477 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 199 transitions, 2214 flow [2024-06-28 02:50:02,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:02,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:02,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:02,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 02:50:02,478 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:50:02,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:02,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1465356841, now seen corresponding path program 2 times [2024-06-28 02:50:02,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:02,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545461533] [2024-06-28 02:50:02,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:02,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:02,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:03,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:03,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:03,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545461533] [2024-06-28 02:50:03,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545461533] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:03,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:03,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:50:03,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123177983] [2024-06-28 02:50:03,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:03,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:50:03,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:03,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:50:03,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:50:03,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:50:03,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 199 transitions, 2214 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:03,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:03,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:50:03,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:03,885 INFO L124 PetriNetUnfolderBase]: 544/944 cut-off events. [2024-06-28 02:50:03,885 INFO L125 PetriNetUnfolderBase]: For 89686/89686 co-relation queries the response was YES. [2024-06-28 02:50:03,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7555 conditions, 944 events. 544/944 cut-off events. For 89686/89686 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4425 event pairs, 73 based on Foata normal form. 2/944 useless extension candidates. Maximal degree in co-relation 7447. Up to 914 conditions per place. [2024-06-28 02:50:03,897 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 196 selfloop transitions, 14 changer transitions 0/212 dead transitions. [2024-06-28 02:50:03,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 212 transitions, 2695 flow [2024-06-28 02:50:03,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:50:03,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:50:03,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-28 02:50:03,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34767025089605735 [2024-06-28 02:50:03,899 INFO L175 Difference]: Start difference. First operand has 222 places, 199 transitions, 2214 flow. Second operand 9 states and 97 transitions. [2024-06-28 02:50:03,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 212 transitions, 2695 flow [2024-06-28 02:50:04,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 212 transitions, 2567 flow, removed 15 selfloop flow, removed 12 redundant places. [2024-06-28 02:50:04,095 INFO L231 Difference]: Finished difference. Result has 220 places, 202 transitions, 2164 flow [2024-06-28 02:50:04,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2086, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2164, PETRI_PLACES=220, PETRI_TRANSITIONS=202} [2024-06-28 02:50:04,096 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 190 predicate places. [2024-06-28 02:50:04,096 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 202 transitions, 2164 flow [2024-06-28 02:50:04,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:04,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:04,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:04,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 02:50:04,096 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:50:04,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:04,096 INFO L85 PathProgramCache]: Analyzing trace with hash 2097273435, now seen corresponding path program 12 times [2024-06-28 02:50:04,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:04,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162719281] [2024-06-28 02:50:04,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:04,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:04,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:04,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:04,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:04,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162719281] [2024-06-28 02:50:04,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162719281] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:04,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:04,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:50:04,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542904478] [2024-06-28 02:50:04,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:04,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:50:04,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:04,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:50:04,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:50:05,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:50:05,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 202 transitions, 2164 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:05,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:05,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:50:05,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:05,494 INFO L124 PetriNetUnfolderBase]: 606/1044 cut-off events. [2024-06-28 02:50:05,494 INFO L125 PetriNetUnfolderBase]: For 123118/123118 co-relation queries the response was YES. [2024-06-28 02:50:05,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9022 conditions, 1044 events. 606/1044 cut-off events. For 123118/123118 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4993 event pairs, 71 based on Foata normal form. 4/1046 useless extension candidates. Maximal degree in co-relation 8915. Up to 763 conditions per place. [2024-06-28 02:50:05,503 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 178 selfloop transitions, 54 changer transitions 0/234 dead transitions. [2024-06-28 02:50:05,503 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 234 transitions, 3468 flow [2024-06-28 02:50:05,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:50:05,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:50:05,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-28 02:50:05,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4064516129032258 [2024-06-28 02:50:05,504 INFO L175 Difference]: Start difference. First operand has 220 places, 202 transitions, 2164 flow. Second operand 10 states and 126 transitions. [2024-06-28 02:50:05,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 234 transitions, 3468 flow [2024-06-28 02:50:05,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 234 transitions, 3394 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-28 02:50:05,683 INFO L231 Difference]: Finished difference. Result has 222 places, 214 transitions, 2558 flow [2024-06-28 02:50:05,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2096, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2558, PETRI_PLACES=222, PETRI_TRANSITIONS=214} [2024-06-28 02:50:05,684 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 192 predicate places. [2024-06-28 02:50:05,684 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 214 transitions, 2558 flow [2024-06-28 02:50:05,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:05,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:05,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:05,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 02:50:05,685 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:50:05,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:05,685 INFO L85 PathProgramCache]: Analyzing trace with hash -597249497, now seen corresponding path program 13 times [2024-06-28 02:50:05,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:05,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090354725] [2024-06-28 02:50:05,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:05,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:05,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:06,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:06,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:06,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090354725] [2024-06-28 02:50:06,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090354725] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:06,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:06,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:50:06,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215057772] [2024-06-28 02:50:06,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:06,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:50:06,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:06,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:50:06,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:50:07,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:50:07,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 214 transitions, 2558 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:07,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:07,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:50:07,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:07,592 INFO L124 PetriNetUnfolderBase]: 602/1038 cut-off events. [2024-06-28 02:50:07,592 INFO L125 PetriNetUnfolderBase]: For 118123/118123 co-relation queries the response was YES. [2024-06-28 02:50:07,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8960 conditions, 1038 events. 602/1038 cut-off events. For 118123/118123 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4971 event pairs, 67 based on Foata normal form. 2/1038 useless extension candidates. Maximal degree in co-relation 8854. Up to 875 conditions per place. [2024-06-28 02:50:07,600 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 186 selfloop transitions, 43 changer transitions 0/231 dead transitions. [2024-06-28 02:50:07,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 231 transitions, 3358 flow [2024-06-28 02:50:07,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:50:07,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:50:07,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-28 02:50:07,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38387096774193546 [2024-06-28 02:50:07,601 INFO L175 Difference]: Start difference. First operand has 222 places, 214 transitions, 2558 flow. Second operand 10 states and 119 transitions. [2024-06-28 02:50:07,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 231 transitions, 3358 flow [2024-06-28 02:50:07,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 231 transitions, 3200 flow, removed 70 selfloop flow, removed 4 redundant places. [2024-06-28 02:50:07,830 INFO L231 Difference]: Finished difference. Result has 228 places, 216 transitions, 2521 flow [2024-06-28 02:50:07,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2400, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2521, PETRI_PLACES=228, PETRI_TRANSITIONS=216} [2024-06-28 02:50:07,831 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 198 predicate places. [2024-06-28 02:50:07,831 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 216 transitions, 2521 flow [2024-06-28 02:50:07,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:07,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:07,831 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:07,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 02:50:07,832 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:50:07,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:07,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1750456711, now seen corresponding path program 3 times [2024-06-28 02:50:07,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:07,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876457165] [2024-06-28 02:50:07,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:07,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:07,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:08,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:08,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:08,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876457165] [2024-06-28 02:50:08,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876457165] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:08,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:08,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:50:08,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675139580] [2024-06-28 02:50:08,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:08,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:50:08,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:08,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:50:08,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:50:08,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:50:08,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 216 transitions, 2521 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:08,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:08,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:50:08,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:09,381 INFO L124 PetriNetUnfolderBase]: 606/1046 cut-off events. [2024-06-28 02:50:09,382 INFO L125 PetriNetUnfolderBase]: For 118960/118960 co-relation queries the response was YES. [2024-06-28 02:50:09,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8919 conditions, 1046 events. 606/1046 cut-off events. For 118960/118960 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 5003 event pairs, 84 based on Foata normal form. 2/1046 useless extension candidates. Maximal degree in co-relation 8811. Up to 1011 conditions per place. [2024-06-28 02:50:09,390 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 212 selfloop transitions, 14 changer transitions 0/228 dead transitions. [2024-06-28 02:50:09,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 228 transitions, 3011 flow [2024-06-28 02:50:09,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:50:09,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:50:09,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-28 02:50:09,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35125448028673834 [2024-06-28 02:50:09,391 INFO L175 Difference]: Start difference. First operand has 228 places, 216 transitions, 2521 flow. Second operand 9 states and 98 transitions. [2024-06-28 02:50:09,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 228 transitions, 3011 flow [2024-06-28 02:50:09,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 228 transitions, 2709 flow, removed 34 selfloop flow, removed 11 redundant places. [2024-06-28 02:50:09,592 INFO L231 Difference]: Finished difference. Result has 226 places, 217 transitions, 2267 flow [2024-06-28 02:50:09,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2219, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2267, PETRI_PLACES=226, PETRI_TRANSITIONS=217} [2024-06-28 02:50:09,593 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 196 predicate places. [2024-06-28 02:50:09,593 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 217 transitions, 2267 flow [2024-06-28 02:50:09,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:09,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:09,593 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:09,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 02:50:09,593 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:50:09,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:09,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1465117273, now seen corresponding path program 14 times [2024-06-28 02:50:09,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:09,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524560186] [2024-06-28 02:50:09,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:09,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:09,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:10,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:10,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:10,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524560186] [2024-06-28 02:50:10,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524560186] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:10,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:10,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:50:10,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719912736] [2024-06-28 02:50:10,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:10,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:50:10,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:10,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:50:10,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:50:10,891 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:50:10,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 217 transitions, 2267 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:10,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:10,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:50:10,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:11,402 INFO L124 PetriNetUnfolderBase]: 622/1072 cut-off events. [2024-06-28 02:50:11,402 INFO L125 PetriNetUnfolderBase]: For 126749/126749 co-relation queries the response was YES. [2024-06-28 02:50:11,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8903 conditions, 1072 events. 622/1072 cut-off events. For 126749/126749 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 5169 event pairs, 75 based on Foata normal form. 2/1072 useless extension candidates. Maximal degree in co-relation 8798. Up to 961 conditions per place. [2024-06-28 02:50:11,411 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 205 selfloop transitions, 29 changer transitions 0/236 dead transitions. [2024-06-28 02:50:11,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 236 transitions, 3147 flow [2024-06-28 02:50:11,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:50:11,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:50:11,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-28 02:50:11,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3774193548387097 [2024-06-28 02:50:11,412 INFO L175 Difference]: Start difference. First operand has 226 places, 217 transitions, 2267 flow. Second operand 10 states and 117 transitions. [2024-06-28 02:50:11,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 236 transitions, 3147 flow [2024-06-28 02:50:11,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 236 transitions, 3101 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-28 02:50:11,598 INFO L231 Difference]: Finished difference. Result has 229 places, 221 transitions, 2376 flow [2024-06-28 02:50:11,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2221, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2376, PETRI_PLACES=229, PETRI_TRANSITIONS=221} [2024-06-28 02:50:11,599 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 199 predicate places. [2024-06-28 02:50:11,599 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 221 transitions, 2376 flow [2024-06-28 02:50:11,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:11,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:11,599 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:11,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 02:50:11,599 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:50:11,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:11,600 INFO L85 PathProgramCache]: Analyzing trace with hash -597428987, now seen corresponding path program 15 times [2024-06-28 02:50:11,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:11,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207293989] [2024-06-28 02:50:11,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:11,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:11,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:12,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:12,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:12,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207293989] [2024-06-28 02:50:12,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207293989] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:12,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:12,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:50:12,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321904641] [2024-06-28 02:50:12,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:12,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:50:12,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:12,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:50:12,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:50:12,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:50:12,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 221 transitions, 2376 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:12,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:12,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:50:12,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:13,051 INFO L124 PetriNetUnfolderBase]: 624/1076 cut-off events. [2024-06-28 02:50:13,051 INFO L125 PetriNetUnfolderBase]: For 130113/130113 co-relation queries the response was YES. [2024-06-28 02:50:13,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8885 conditions, 1076 events. 624/1076 cut-off events. For 130113/130113 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 5192 event pairs, 72 based on Foata normal form. 4/1078 useless extension candidates. Maximal degree in co-relation 8779. Up to 786 conditions per place. [2024-06-28 02:50:13,060 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 175 selfloop transitions, 63 changer transitions 0/240 dead transitions. [2024-06-28 02:50:13,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 240 transitions, 3233 flow [2024-06-28 02:50:13,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:50:13,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:50:13,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-28 02:50:13,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3967741935483871 [2024-06-28 02:50:13,061 INFO L175 Difference]: Start difference. First operand has 229 places, 221 transitions, 2376 flow. Second operand 10 states and 123 transitions. [2024-06-28 02:50:13,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 240 transitions, 3233 flow [2024-06-28 02:50:13,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 240 transitions, 3082 flow, removed 34 selfloop flow, removed 8 redundant places. [2024-06-28 02:50:13,297 INFO L231 Difference]: Finished difference. Result has 231 places, 223 transitions, 2407 flow [2024-06-28 02:50:13,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2225, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2407, PETRI_PLACES=231, PETRI_TRANSITIONS=223} [2024-06-28 02:50:13,297 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 201 predicate places. [2024-06-28 02:50:13,298 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 223 transitions, 2407 flow [2024-06-28 02:50:13,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:13,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:13,298 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:13,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 02:50:13,298 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:50:13,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:13,298 INFO L85 PathProgramCache]: Analyzing trace with hash -944081659, now seen corresponding path program 16 times [2024-06-28 02:50:13,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:13,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123431489] [2024-06-28 02:50:13,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:13,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:13,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:14,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:14,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:14,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123431489] [2024-06-28 02:50:14,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123431489] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:14,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:14,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:50:14,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243095428] [2024-06-28 02:50:14,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:14,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:50:14,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:14,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:50:14,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:50:14,719 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:50:14,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 223 transitions, 2407 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:14,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:14,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:50:14,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:15,162 INFO L124 PetriNetUnfolderBase]: 626/1080 cut-off events. [2024-06-28 02:50:15,162 INFO L125 PetriNetUnfolderBase]: For 128125/128125 co-relation queries the response was YES. [2024-06-28 02:50:15,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8821 conditions, 1080 events. 626/1080 cut-off events. For 128125/128125 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 5210 event pairs, 87 based on Foata normal form. 4/1082 useless extension candidates. Maximal degree in co-relation 8715. Up to 1027 conditions per place. [2024-06-28 02:50:15,171 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 220 selfloop transitions, 17 changer transitions 0/239 dead transitions. [2024-06-28 02:50:15,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 239 transitions, 2975 flow [2024-06-28 02:50:15,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:50:15,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:50:15,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-28 02:50:15,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 02:50:15,173 INFO L175 Difference]: Start difference. First operand has 231 places, 223 transitions, 2407 flow. Second operand 10 states and 110 transitions. [2024-06-28 02:50:15,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 239 transitions, 2975 flow [2024-06-28 02:50:15,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 239 transitions, 2826 flow, removed 30 selfloop flow, removed 7 redundant places. [2024-06-28 02:50:15,418 INFO L231 Difference]: Finished difference. Result has 234 places, 225 transitions, 2359 flow [2024-06-28 02:50:15,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2258, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2359, PETRI_PLACES=234, PETRI_TRANSITIONS=225} [2024-06-28 02:50:15,418 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 204 predicate places. [2024-06-28 02:50:15,418 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 225 transitions, 2359 flow [2024-06-28 02:50:15,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:15,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:15,419 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:15,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 02:50:15,419 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:50:15,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:15,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1229418679, now seen corresponding path program 17 times [2024-06-28 02:50:15,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:15,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507882092] [2024-06-28 02:50:15,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:15,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:15,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:16,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:16,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:16,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507882092] [2024-06-28 02:50:16,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507882092] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:16,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:16,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:50:16,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985382786] [2024-06-28 02:50:16,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:16,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:50:16,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:16,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:50:16,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:50:16,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:50:16,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 225 transitions, 2359 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:16,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:16,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:50:16,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:16,964 INFO L124 PetriNetUnfolderBase]: 620/1072 cut-off events. [2024-06-28 02:50:16,964 INFO L125 PetriNetUnfolderBase]: For 119857/119857 co-relation queries the response was YES. [2024-06-28 02:50:16,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8351 conditions, 1072 events. 620/1072 cut-off events. For 119857/119857 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 5187 event pairs, 76 based on Foata normal form. 4/1074 useless extension candidates. Maximal degree in co-relation 8244. Up to 968 conditions per place. [2024-06-28 02:50:16,973 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 209 selfloop transitions, 28 changer transitions 0/239 dead transitions. [2024-06-28 02:50:16,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 239 transitions, 3013 flow [2024-06-28 02:50:16,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:50:16,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:50:16,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-28 02:50:16,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-28 02:50:16,974 INFO L175 Difference]: Start difference. First operand has 234 places, 225 transitions, 2359 flow. Second operand 10 states and 115 transitions. [2024-06-28 02:50:16,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 239 transitions, 3013 flow [2024-06-28 02:50:17,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 239 transitions, 2888 flow, removed 47 selfloop flow, removed 8 redundant places. [2024-06-28 02:50:17,240 INFO L231 Difference]: Finished difference. Result has 236 places, 225 transitions, 2298 flow [2024-06-28 02:50:17,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2234, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2298, PETRI_PLACES=236, PETRI_TRANSITIONS=225} [2024-06-28 02:50:17,240 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 206 predicate places. [2024-06-28 02:50:17,240 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 225 transitions, 2298 flow [2024-06-28 02:50:17,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:17,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:17,241 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:17,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 02:50:17,241 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:50:17,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:17,241 INFO L85 PathProgramCache]: Analyzing trace with hash -590753819, now seen corresponding path program 4 times [2024-06-28 02:50:17,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:17,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647110565] [2024-06-28 02:50:17,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:17,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:17,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:18,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:18,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:18,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647110565] [2024-06-28 02:50:18,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647110565] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:18,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:18,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:50:18,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058952867] [2024-06-28 02:50:18,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:18,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:50:18,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:18,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:50:18,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:50:18,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:50:18,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 225 transitions, 2298 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:18,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:18,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:50:18,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:18,985 INFO L124 PetriNetUnfolderBase]: 627/1085 cut-off events. [2024-06-28 02:50:18,985 INFO L125 PetriNetUnfolderBase]: For 116553/116553 co-relation queries the response was YES. [2024-06-28 02:50:18,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8318 conditions, 1085 events. 627/1085 cut-off events. For 116553/116553 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 5269 event pairs, 82 based on Foata normal form. 2/1085 useless extension candidates. Maximal degree in co-relation 8210. Up to 1034 conditions per place. [2024-06-28 02:50:18,994 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 219 selfloop transitions, 21 changer transitions 0/242 dead transitions. [2024-06-28 02:50:18,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 242 transitions, 2854 flow [2024-06-28 02:50:18,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:50:18,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:50:18,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-28 02:50:18,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3655913978494624 [2024-06-28 02:50:18,995 INFO L175 Difference]: Start difference. First operand has 236 places, 225 transitions, 2298 flow. Second operand 9 states and 102 transitions. [2024-06-28 02:50:18,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 242 transitions, 2854 flow [2024-06-28 02:50:19,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 242 transitions, 2806 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-06-28 02:50:19,227 INFO L231 Difference]: Finished difference. Result has 239 places, 231 transitions, 2373 flow [2024-06-28 02:50:19,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2250, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2373, PETRI_PLACES=239, PETRI_TRANSITIONS=231} [2024-06-28 02:50:19,227 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 209 predicate places. [2024-06-28 02:50:19,228 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 231 transitions, 2373 flow [2024-06-28 02:50:19,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:19,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:19,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:19,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 02:50:19,228 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:50:19,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:19,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1229418865, now seen corresponding path program 6 times [2024-06-28 02:50:19,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:19,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598761809] [2024-06-28 02:50:19,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:19,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:19,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:20,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:20,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:20,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598761809] [2024-06-28 02:50:20,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598761809] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:20,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:20,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:50:20,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362052145] [2024-06-28 02:50:20,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:20,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:50:20,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:20,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:50:20,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:50:20,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:50:20,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 231 transitions, 2373 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:20,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:20,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:50:20,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:20,885 INFO L124 PetriNetUnfolderBase]: 619/1072 cut-off events. [2024-06-28 02:50:20,885 INFO L125 PetriNetUnfolderBase]: For 113522/113522 co-relation queries the response was YES. [2024-06-28 02:50:20,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8180 conditions, 1072 events. 619/1072 cut-off events. For 113522/113522 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 5193 event pairs, 75 based on Foata normal form. 3/1073 useless extension candidates. Maximal degree in co-relation 8069. Up to 1015 conditions per place. [2024-06-28 02:50:20,893 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 221 selfloop transitions, 21 changer transitions 0/244 dead transitions. [2024-06-28 02:50:20,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 244 transitions, 2893 flow [2024-06-28 02:50:20,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:50:20,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:50:20,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-28 02:50:20,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36451612903225805 [2024-06-28 02:50:20,894 INFO L175 Difference]: Start difference. First operand has 239 places, 231 transitions, 2373 flow. Second operand 10 states and 113 transitions. [2024-06-28 02:50:20,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 244 transitions, 2893 flow [2024-06-28 02:50:21,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 244 transitions, 2804 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-28 02:50:21,129 INFO L231 Difference]: Finished difference. Result has 242 places, 231 transitions, 2332 flow [2024-06-28 02:50:21,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2284, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2332, PETRI_PLACES=242, PETRI_TRANSITIONS=231} [2024-06-28 02:50:21,129 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 212 predicate places. [2024-06-28 02:50:21,129 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 231 transitions, 2332 flow [2024-06-28 02:50:21,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:21,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:21,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:21,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 02:50:21,130 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:50:21,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:21,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1220830501, now seen corresponding path program 5 times [2024-06-28 02:50:21,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:21,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207309657] [2024-06-28 02:50:21,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:21,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:21,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:22,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:22,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:22,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207309657] [2024-06-28 02:50:22,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207309657] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:22,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:22,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:50:22,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602662867] [2024-06-28 02:50:22,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:22,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:50:22,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:22,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:50:22,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:50:22,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:50:22,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 231 transitions, 2332 flow. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:22,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:22,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:50:22,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:22,564 INFO L124 PetriNetUnfolderBase]: 616/1067 cut-off events. [2024-06-28 02:50:22,564 INFO L125 PetriNetUnfolderBase]: For 106828/106828 co-relation queries the response was YES. [2024-06-28 02:50:22,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7968 conditions, 1067 events. 616/1067 cut-off events. For 106828/106828 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 5171 event pairs, 78 based on Foata normal form. 2/1067 useless extension candidates. Maximal degree in co-relation 7858. Up to 1032 conditions per place. [2024-06-28 02:50:22,573 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 225 selfloop transitions, 14 changer transitions 0/241 dead transitions. [2024-06-28 02:50:22,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 241 transitions, 2832 flow [2024-06-28 02:50:22,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 02:50:22,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 02:50:22,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-28 02:50:22,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-28 02:50:22,574 INFO L175 Difference]: Start difference. First operand has 242 places, 231 transitions, 2332 flow. Second operand 9 states and 96 transitions. [2024-06-28 02:50:22,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 241 transitions, 2832 flow [2024-06-28 02:50:22,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 241 transitions, 2739 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-28 02:50:22,812 INFO L231 Difference]: Finished difference. Result has 241 places, 231 transitions, 2271 flow [2024-06-28 02:50:22,813 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2239, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2271, PETRI_PLACES=241, PETRI_TRANSITIONS=231} [2024-06-28 02:50:22,813 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 211 predicate places. [2024-06-28 02:50:22,813 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 231 transitions, 2271 flow [2024-06-28 02:50:22,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 11 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:22,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:22,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:22,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 02:50:22,813 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:50:22,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:22,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1400916352, now seen corresponding path program 1 times [2024-06-28 02:50:22,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:22,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564768753] [2024-06-28 02:50:22,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:22,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:22,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:24,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:24,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:24,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564768753] [2024-06-28 02:50:24,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564768753] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:24,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:24,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:50:24,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441166308] [2024-06-28 02:50:24,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:24,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:50:24,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:24,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:50:24,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:50:24,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:50:24,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 231 transitions, 2271 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:24,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:24,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:50:24,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:24,701 INFO L124 PetriNetUnfolderBase]: 627/1088 cut-off events. [2024-06-28 02:50:24,701 INFO L125 PetriNetUnfolderBase]: For 115630/115630 co-relation queries the response was YES. [2024-06-28 02:50:24,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8237 conditions, 1088 events. 627/1088 cut-off events. For 115630/115630 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5303 event pairs, 72 based on Foata normal form. 2/1088 useless extension candidates. Maximal degree in co-relation 8126. Up to 956 conditions per place. [2024-06-28 02:50:24,710 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 231 selfloop transitions, 26 changer transitions 0/259 dead transitions. [2024-06-28 02:50:24,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 259 transitions, 3061 flow [2024-06-28 02:50:24,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:50:24,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:50:24,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-28 02:50:24,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763440860215054 [2024-06-28 02:50:24,711 INFO L175 Difference]: Start difference. First operand has 241 places, 231 transitions, 2271 flow. Second operand 12 states and 140 transitions. [2024-06-28 02:50:24,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 259 transitions, 3061 flow [2024-06-28 02:50:24,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 259 transitions, 2993 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-28 02:50:24,970 INFO L231 Difference]: Finished difference. Result has 245 places, 233 transitions, 2305 flow [2024-06-28 02:50:24,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2203, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2305, PETRI_PLACES=245, PETRI_TRANSITIONS=233} [2024-06-28 02:50:24,970 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 215 predicate places. [2024-06-28 02:50:24,970 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 233 transitions, 2305 flow [2024-06-28 02:50:24,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:24,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:24,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:24,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 02:50:24,971 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:50:24,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:24,971 INFO L85 PathProgramCache]: Analyzing trace with hash 525204216, now seen corresponding path program 2 times [2024-06-28 02:50:24,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:24,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789811033] [2024-06-28 02:50:24,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:24,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:24,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:26,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:26,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:26,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789811033] [2024-06-28 02:50:26,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789811033] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:26,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:26,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:50:26,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624020651] [2024-06-28 02:50:26,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:26,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:50:26,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:26,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:50:26,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:50:26,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:50:26,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 233 transitions, 2305 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:26,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:26,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:50:26,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:27,022 INFO L124 PetriNetUnfolderBase]: 641/1114 cut-off events. [2024-06-28 02:50:27,022 INFO L125 PetriNetUnfolderBase]: For 125181/125181 co-relation queries the response was YES. [2024-06-28 02:50:27,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8610 conditions, 1114 events. 641/1114 cut-off events. For 125181/125181 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 5495 event pairs, 81 based on Foata normal form. 2/1114 useless extension candidates. Maximal degree in co-relation 8498. Up to 1021 conditions per place. [2024-06-28 02:50:27,032 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 232 selfloop transitions, 28 changer transitions 0/262 dead transitions. [2024-06-28 02:50:27,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 262 transitions, 3119 flow [2024-06-28 02:50:27,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:50:27,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:50:27,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-28 02:50:27,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3790322580645161 [2024-06-28 02:50:27,033 INFO L175 Difference]: Start difference. First operand has 245 places, 233 transitions, 2305 flow. Second operand 12 states and 141 transitions. [2024-06-28 02:50:27,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 262 transitions, 3119 flow [2024-06-28 02:50:27,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 262 transitions, 3016 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-28 02:50:27,308 INFO L231 Difference]: Finished difference. Result has 248 places, 237 transitions, 2326 flow [2024-06-28 02:50:27,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2220, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2326, PETRI_PLACES=248, PETRI_TRANSITIONS=237} [2024-06-28 02:50:27,308 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 218 predicate places. [2024-06-28 02:50:27,308 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 237 transitions, 2326 flow [2024-06-28 02:50:27,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:27,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:27,308 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:27,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 02:50:27,309 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:50:27,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:27,309 INFO L85 PathProgramCache]: Analyzing trace with hash 829027815, now seen corresponding path program 1 times [2024-06-28 02:50:27,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:27,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127876025] [2024-06-28 02:50:27,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:27,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:27,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:28,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:28,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:28,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127876025] [2024-06-28 02:50:28,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127876025] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:28,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:28,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:50:28,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220842815] [2024-06-28 02:50:28,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:28,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:50:28,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:28,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:50:28,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:50:28,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:50:28,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 237 transitions, 2326 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:28,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:28,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:50:28,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:29,167 INFO L124 PetriNetUnfolderBase]: 657/1140 cut-off events. [2024-06-28 02:50:29,167 INFO L125 PetriNetUnfolderBase]: For 136163/136163 co-relation queries the response was YES. [2024-06-28 02:50:29,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8969 conditions, 1140 events. 657/1140 cut-off events. For 136163/136163 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 5679 event pairs, 83 based on Foata normal form. 2/1140 useless extension candidates. Maximal degree in co-relation 8857. Up to 1045 conditions per place. [2024-06-28 02:50:29,175 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 235 selfloop transitions, 30 changer transitions 0/267 dead transitions. [2024-06-28 02:50:29,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 267 transitions, 3218 flow [2024-06-28 02:50:29,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:50:29,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:50:29,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 144 transitions. [2024-06-28 02:50:29,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-28 02:50:29,176 INFO L175 Difference]: Start difference. First operand has 248 places, 237 transitions, 2326 flow. Second operand 12 states and 144 transitions. [2024-06-28 02:50:29,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 267 transitions, 3218 flow [2024-06-28 02:50:29,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 267 transitions, 3171 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-28 02:50:29,470 INFO L231 Difference]: Finished difference. Result has 253 places, 241 transitions, 2468 flow [2024-06-28 02:50:29,470 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2279, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2468, PETRI_PLACES=253, PETRI_TRANSITIONS=241} [2024-06-28 02:50:29,470 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 223 predicate places. [2024-06-28 02:50:29,470 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 241 transitions, 2468 flow [2024-06-28 02:50:29,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:29,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:29,471 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:29,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 02:50:29,471 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:50:29,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:29,471 INFO L85 PathProgramCache]: Analyzing trace with hash -198731686, now seen corresponding path program 3 times [2024-06-28 02:50:29,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:29,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247934203] [2024-06-28 02:50:29,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:29,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:29,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:30,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:30,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:30,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247934203] [2024-06-28 02:50:30,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247934203] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:30,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:30,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:50:30,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259052613] [2024-06-28 02:50:30,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:30,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:50:30,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:30,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:50:30,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:50:30,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:50:30,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 241 transitions, 2468 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:30,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:30,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:50:30,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:31,161 INFO L124 PetriNetUnfolderBase]: 658/1143 cut-off events. [2024-06-28 02:50:31,161 INFO L125 PetriNetUnfolderBase]: For 139420/139420 co-relation queries the response was YES. [2024-06-28 02:50:31,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8918 conditions, 1143 events. 658/1143 cut-off events. For 139420/139420 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 5679 event pairs, 86 based on Foata normal form. 4/1145 useless extension candidates. Maximal degree in co-relation 8804. Up to 1061 conditions per place. [2024-06-28 02:50:31,171 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 231 selfloop transitions, 27 changer transitions 0/260 dead transitions. [2024-06-28 02:50:31,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 260 transitions, 3054 flow [2024-06-28 02:50:31,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:50:31,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:50:31,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-28 02:50:31,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3774193548387097 [2024-06-28 02:50:31,172 INFO L175 Difference]: Start difference. First operand has 253 places, 241 transitions, 2468 flow. Second operand 10 states and 117 transitions. [2024-06-28 02:50:31,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 260 transitions, 3054 flow [2024-06-28 02:50:31,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 260 transitions, 2931 flow, removed 45 selfloop flow, removed 8 redundant places. [2024-06-28 02:50:31,485 INFO L231 Difference]: Finished difference. Result has 255 places, 242 transitions, 2425 flow [2024-06-28 02:50:31,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2345, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2425, PETRI_PLACES=255, PETRI_TRANSITIONS=242} [2024-06-28 02:50:31,485 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 225 predicate places. [2024-06-28 02:50:31,486 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 242 transitions, 2425 flow [2024-06-28 02:50:31,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:31,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:31,486 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:31,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 02:50:31,486 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:50:31,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:31,487 INFO L85 PathProgramCache]: Analyzing trace with hash 528932741, now seen corresponding path program 2 times [2024-06-28 02:50:31,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:31,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263132490] [2024-06-28 02:50:31,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:31,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:31,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:33,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:33,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:33,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263132490] [2024-06-28 02:50:33,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263132490] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:33,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:33,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:50:33,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705944548] [2024-06-28 02:50:33,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:33,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:50:33,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:33,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:50:33,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:50:33,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:50:33,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 242 transitions, 2425 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:33,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:33,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:50:33,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:34,026 INFO L124 PetriNetUnfolderBase]: 664/1153 cut-off events. [2024-06-28 02:50:34,027 INFO L125 PetriNetUnfolderBase]: For 135666/135666 co-relation queries the response was YES. [2024-06-28 02:50:34,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8938 conditions, 1153 events. 664/1153 cut-off events. For 135666/135666 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 5748 event pairs, 84 based on Foata normal form. 2/1153 useless extension candidates. Maximal degree in co-relation 8822. Up to 1092 conditions per place. [2024-06-28 02:50:34,037 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 240 selfloop transitions, 22 changer transitions 0/264 dead transitions. [2024-06-28 02:50:34,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 264 transitions, 3051 flow [2024-06-28 02:50:34,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:50:34,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:50:34,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-28 02:50:34,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36656891495601174 [2024-06-28 02:50:34,038 INFO L175 Difference]: Start difference. First operand has 255 places, 242 transitions, 2425 flow. Second operand 11 states and 125 transitions. [2024-06-28 02:50:34,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 264 transitions, 3051 flow [2024-06-28 02:50:34,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 264 transitions, 2989 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-28 02:50:34,365 INFO L231 Difference]: Finished difference. Result has 258 places, 244 transitions, 2458 flow [2024-06-28 02:50:34,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2363, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2458, PETRI_PLACES=258, PETRI_TRANSITIONS=244} [2024-06-28 02:50:34,365 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 228 predicate places. [2024-06-28 02:50:34,365 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 244 transitions, 2458 flow [2024-06-28 02:50:34,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:34,366 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:34,366 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:34,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 02:50:34,366 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:50:34,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:34,367 INFO L85 PathProgramCache]: Analyzing trace with hash -112043596, now seen corresponding path program 4 times [2024-06-28 02:50:34,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:34,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105172170] [2024-06-28 02:50:34,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:34,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:34,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:35,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:35,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:35,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105172170] [2024-06-28 02:50:35,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105172170] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:35,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:35,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:50:35,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552850306] [2024-06-28 02:50:35,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:35,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:50:35,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:35,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:50:35,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:50:36,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:50:36,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 244 transitions, 2458 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:36,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:36,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:50:36,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:36,470 INFO L124 PetriNetUnfolderBase]: 661/1148 cut-off events. [2024-06-28 02:50:36,470 INFO L125 PetriNetUnfolderBase]: For 131792/131792 co-relation queries the response was YES. [2024-06-28 02:50:36,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8764 conditions, 1148 events. 661/1148 cut-off events. For 131792/131792 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 5724 event pairs, 83 based on Foata normal form. 2/1148 useless extension candidates. Maximal degree in co-relation 8647. Up to 1073 conditions per place. [2024-06-28 02:50:36,478 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 239 selfloop transitions, 23 changer transitions 0/264 dead transitions. [2024-06-28 02:50:36,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 264 transitions, 3038 flow [2024-06-28 02:50:36,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:50:36,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:50:36,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-28 02:50:36,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36950146627565983 [2024-06-28 02:50:36,479 INFO L175 Difference]: Start difference. First operand has 258 places, 244 transitions, 2458 flow. Second operand 11 states and 126 transitions. [2024-06-28 02:50:36,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 264 transitions, 3038 flow [2024-06-28 02:50:36,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 264 transitions, 2951 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-28 02:50:36,786 INFO L231 Difference]: Finished difference. Result has 260 places, 244 transitions, 2421 flow [2024-06-28 02:50:36,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2371, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2421, PETRI_PLACES=260, PETRI_TRANSITIONS=244} [2024-06-28 02:50:36,787 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 230 predicate places. [2024-06-28 02:50:36,787 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 244 transitions, 2421 flow [2024-06-28 02:50:36,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:36,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:36,788 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:36,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 02:50:36,788 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:50:36,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:36,788 INFO L85 PathProgramCache]: Analyzing trace with hash 528927161, now seen corresponding path program 3 times [2024-06-28 02:50:36,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:36,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726345455] [2024-06-28 02:50:36,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:36,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:36,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:38,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:38,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:38,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726345455] [2024-06-28 02:50:38,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726345455] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:38,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:38,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:50:38,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230216685] [2024-06-28 02:50:38,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:38,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:50:38,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:38,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:50:38,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:50:38,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:50:38,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 244 transitions, 2421 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:38,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:38,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:50:38,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:38,940 INFO L124 PetriNetUnfolderBase]: 670/1163 cut-off events. [2024-06-28 02:50:38,940 INFO L125 PetriNetUnfolderBase]: For 134946/134946 co-relation queries the response was YES. [2024-06-28 02:50:38,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8851 conditions, 1163 events. 670/1163 cut-off events. For 134946/134946 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 5826 event pairs, 83 based on Foata normal form. 2/1163 useless extension candidates. Maximal degree in co-relation 8733. Up to 1093 conditions per place. [2024-06-28 02:50:38,956 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 242 selfloop transitions, 25 changer transitions 0/269 dead transitions. [2024-06-28 02:50:38,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 269 transitions, 3087 flow [2024-06-28 02:50:38,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:50:38,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:50:38,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-28 02:50:38,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375366568914956 [2024-06-28 02:50:38,958 INFO L175 Difference]: Start difference. First operand has 260 places, 244 transitions, 2421 flow. Second operand 11 states and 128 transitions. [2024-06-28 02:50:38,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 269 transitions, 3087 flow [2024-06-28 02:50:39,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 269 transitions, 3009 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 02:50:39,275 INFO L231 Difference]: Finished difference. Result has 262 places, 248 transitions, 2480 flow [2024-06-28 02:50:39,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2349, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2480, PETRI_PLACES=262, PETRI_TRANSITIONS=248} [2024-06-28 02:50:39,276 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 232 predicate places. [2024-06-28 02:50:39,276 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 248 transitions, 2480 flow [2024-06-28 02:50:39,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:39,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:39,276 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:39,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 02:50:39,277 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:50:39,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:39,277 INFO L85 PathProgramCache]: Analyzing trace with hash 528783011, now seen corresponding path program 4 times [2024-06-28 02:50:39,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:39,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257003548] [2024-06-28 02:50:39,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:39,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:39,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:40,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:40,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:40,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257003548] [2024-06-28 02:50:40,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257003548] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:40,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:40,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:50:40,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106432294] [2024-06-28 02:50:40,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:40,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:50:40,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:40,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:50:40,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:50:40,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:50:40,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 248 transitions, 2480 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:40,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:40,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:50:40,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:40,982 INFO L124 PetriNetUnfolderBase]: 666/1157 cut-off events. [2024-06-28 02:50:40,982 INFO L125 PetriNetUnfolderBase]: For 130712/130712 co-relation queries the response was YES. [2024-06-28 02:50:40,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8636 conditions, 1157 events. 666/1157 cut-off events. For 130712/130712 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 5778 event pairs, 82 based on Foata normal form. 2/1157 useless extension candidates. Maximal degree in co-relation 8517. Up to 1054 conditions per place. [2024-06-28 02:50:40,993 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 228 selfloop transitions, 37 changer transitions 0/267 dead transitions. [2024-06-28 02:50:40,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 267 transitions, 3068 flow [2024-06-28 02:50:40,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:50:40,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:50:40,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-28 02:50:40,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3903225806451613 [2024-06-28 02:50:40,995 INFO L175 Difference]: Start difference. First operand has 262 places, 248 transitions, 2480 flow. Second operand 10 states and 121 transitions. [2024-06-28 02:50:40,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 267 transitions, 3068 flow [2024-06-28 02:50:41,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 267 transitions, 2961 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-06-28 02:50:41,308 INFO L231 Difference]: Finished difference. Result has 264 places, 248 transitions, 2461 flow [2024-06-28 02:50:41,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2373, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2461, PETRI_PLACES=264, PETRI_TRANSITIONS=248} [2024-06-28 02:50:41,308 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 234 predicate places. [2024-06-28 02:50:41,308 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 248 transitions, 2461 flow [2024-06-28 02:50:41,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:41,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:41,309 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:41,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 02:50:41,309 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:50:41,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:41,309 INFO L85 PathProgramCache]: Analyzing trace with hash 200500455, now seen corresponding path program 1 times [2024-06-28 02:50:41,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:41,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050951123] [2024-06-28 02:50:41,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:41,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:41,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:42,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:42,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:42,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050951123] [2024-06-28 02:50:42,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050951123] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:42,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:42,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:50:42,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675900976] [2024-06-28 02:50:42,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:42,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:50:42,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:42,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:50:42,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:50:42,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:50:42,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 248 transitions, 2461 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:42,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:42,775 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:50:42,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:43,129 INFO L124 PetriNetUnfolderBase]: 670/1165 cut-off events. [2024-06-28 02:50:43,129 INFO L125 PetriNetUnfolderBase]: For 132796/132796 co-relation queries the response was YES. [2024-06-28 02:50:43,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8647 conditions, 1165 events. 670/1165 cut-off events. For 132796/132796 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 5862 event pairs, 57 based on Foata normal form. 2/1165 useless extension candidates. Maximal degree in co-relation 8527. Up to 994 conditions per place. [2024-06-28 02:50:43,140 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 214 selfloop transitions, 51 changer transitions 0/267 dead transitions. [2024-06-28 02:50:43,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 267 transitions, 3049 flow [2024-06-28 02:50:43,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:50:43,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:50:43,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-28 02:50:43,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3935483870967742 [2024-06-28 02:50:43,141 INFO L175 Difference]: Start difference. First operand has 264 places, 248 transitions, 2461 flow. Second operand 10 states and 122 transitions. [2024-06-28 02:50:43,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 267 transitions, 3049 flow [2024-06-28 02:50:43,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 267 transitions, 2970 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-28 02:50:43,490 INFO L231 Difference]: Finished difference. Result has 265 places, 249 transitions, 2496 flow [2024-06-28 02:50:43,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2382, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2496, PETRI_PLACES=265, PETRI_TRANSITIONS=249} [2024-06-28 02:50:43,490 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 235 predicate places. [2024-06-28 02:50:43,490 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 249 transitions, 2496 flow [2024-06-28 02:50:43,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:43,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:43,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:43,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-28 02:50:43,491 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:50:43,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:43,491 INFO L85 PathProgramCache]: Analyzing trace with hash 200492519, now seen corresponding path program 5 times [2024-06-28 02:50:43,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:43,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865930874] [2024-06-28 02:50:43,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:43,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:43,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:45,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:45,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:45,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865930874] [2024-06-28 02:50:45,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865930874] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:45,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:45,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:50:45,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166176566] [2024-06-28 02:50:45,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:45,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:50:45,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:45,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:50:45,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:50:45,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:50:45,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 249 transitions, 2496 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:45,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:45,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:50:45,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:46,495 INFO L124 PetriNetUnfolderBase]: 705/1222 cut-off events. [2024-06-28 02:50:46,495 INFO L125 PetriNetUnfolderBase]: For 147094/147094 co-relation queries the response was YES. [2024-06-28 02:50:46,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9516 conditions, 1222 events. 705/1222 cut-off events. For 147094/147094 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 6195 event pairs, 65 based on Foata normal form. 2/1222 useless extension candidates. Maximal degree in co-relation 9396. Up to 558 conditions per place. [2024-06-28 02:50:46,506 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 146 selfloop transitions, 138 changer transitions 0/286 dead transitions. [2024-06-28 02:50:46,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 286 transitions, 3936 flow [2024-06-28 02:50:46,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:50:46,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:50:46,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-28 02:50:46,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4310850439882698 [2024-06-28 02:50:46,507 INFO L175 Difference]: Start difference. First operand has 265 places, 249 transitions, 2496 flow. Second operand 11 states and 147 transitions. [2024-06-28 02:50:46,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 286 transitions, 3936 flow [2024-06-28 02:50:46,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 286 transitions, 3832 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-28 02:50:46,833 INFO L231 Difference]: Finished difference. Result has 269 places, 260 transitions, 3032 flow [2024-06-28 02:50:46,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2392, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3032, PETRI_PLACES=269, PETRI_TRANSITIONS=260} [2024-06-28 02:50:46,833 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 239 predicate places. [2024-06-28 02:50:46,834 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 260 transitions, 3032 flow [2024-06-28 02:50:46,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:46,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:46,834 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:46,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-28 02:50:46,834 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:50:46,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:46,834 INFO L85 PathProgramCache]: Analyzing trace with hash -827474217, now seen corresponding path program 6 times [2024-06-28 02:50:46,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:46,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391785848] [2024-06-28 02:50:46,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:46,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:46,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:47,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:47,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:47,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391785848] [2024-06-28 02:50:47,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391785848] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:47,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:47,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:50:47,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312639488] [2024-06-28 02:50:47,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:47,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:50:47,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:47,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:50:47,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:50:48,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:50:48,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 260 transitions, 3032 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:48,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:48,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:50:48,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:48,505 INFO L124 PetriNetUnfolderBase]: 721/1248 cut-off events. [2024-06-28 02:50:48,505 INFO L125 PetriNetUnfolderBase]: For 160734/160734 co-relation queries the response was YES. [2024-06-28 02:50:48,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10485 conditions, 1248 events. 721/1248 cut-off events. For 160734/160734 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 6349 event pairs, 76 based on Foata normal form. 2/1248 useless extension candidates. Maximal degree in co-relation 10363. Up to 606 conditions per place. [2024-06-28 02:50:48,517 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 158 selfloop transitions, 126 changer transitions 0/286 dead transitions. [2024-06-28 02:50:48,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 286 transitions, 4322 flow [2024-06-28 02:50:48,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:50:48,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:50:48,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-28 02:50:48,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44193548387096776 [2024-06-28 02:50:48,518 INFO L175 Difference]: Start difference. First operand has 269 places, 260 transitions, 3032 flow. Second operand 10 states and 137 transitions. [2024-06-28 02:50:48,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 286 transitions, 4322 flow [2024-06-28 02:50:48,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 286 transitions, 4128 flow, removed 74 selfloop flow, removed 5 redundant places. [2024-06-28 02:50:48,853 INFO L231 Difference]: Finished difference. Result has 274 places, 264 transitions, 3234 flow [2024-06-28 02:50:48,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2874, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3234, PETRI_PLACES=274, PETRI_TRANSITIONS=264} [2024-06-28 02:50:48,854 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 244 predicate places. [2024-06-28 02:50:48,854 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 264 transitions, 3234 flow [2024-06-28 02:50:48,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:48,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:48,854 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:48,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-28 02:50:48,854 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:50:48,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:48,855 INFO L85 PathProgramCache]: Analyzing trace with hash 194928329, now seen corresponding path program 7 times [2024-06-28 02:50:48,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:48,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578763411] [2024-06-28 02:50:48,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:48,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:48,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:50,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:50,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:50,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578763411] [2024-06-28 02:50:50,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578763411] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:50,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:50,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:50:50,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592733360] [2024-06-28 02:50:50,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:50,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:50:50,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:50,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:50:50,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:50:50,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:50:50,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 264 transitions, 3234 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:50,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:50,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:50:50,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:51,601 INFO L124 PetriNetUnfolderBase]: 717/1242 cut-off events. [2024-06-28 02:50:51,601 INFO L125 PetriNetUnfolderBase]: For 155967/155967 co-relation queries the response was YES. [2024-06-28 02:50:51,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10354 conditions, 1242 events. 717/1242 cut-off events. For 155967/155967 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 6349 event pairs, 61 based on Foata normal form. 2/1242 useless extension candidates. Maximal degree in co-relation 10230. Up to 886 conditions per place. [2024-06-28 02:50:51,614 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 194 selfloop transitions, 89 changer transitions 0/285 dead transitions. [2024-06-28 02:50:51,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 285 transitions, 3864 flow [2024-06-28 02:50:51,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:50:51,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:50:51,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-28 02:50:51,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41055718475073316 [2024-06-28 02:50:51,615 INFO L175 Difference]: Start difference. First operand has 274 places, 264 transitions, 3234 flow. Second operand 11 states and 140 transitions. [2024-06-28 02:50:51,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 285 transitions, 3864 flow [2024-06-28 02:50:52,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 285 transitions, 3679 flow, removed 24 selfloop flow, removed 6 redundant places. [2024-06-28 02:50:52,028 INFO L231 Difference]: Finished difference. Result has 279 places, 264 transitions, 3232 flow [2024-06-28 02:50:52,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3049, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3232, PETRI_PLACES=279, PETRI_TRANSITIONS=264} [2024-06-28 02:50:52,029 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 249 predicate places. [2024-06-28 02:50:52,029 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 264 transitions, 3232 flow [2024-06-28 02:50:52,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:52,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:52,029 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:52,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-28 02:50:52,029 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:50:52,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:52,030 INFO L85 PathProgramCache]: Analyzing trace with hash 200290709, now seen corresponding path program 8 times [2024-06-28 02:50:52,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:52,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836217699] [2024-06-28 02:50:52,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:52,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:52,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:54,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:54,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:54,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836217699] [2024-06-28 02:50:54,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836217699] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:54,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:54,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:50:54,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014917076] [2024-06-28 02:50:54,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:54,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:50:54,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:54,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:50:54,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:50:54,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:50:54,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 264 transitions, 3232 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:54,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:54,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:50:54,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:54,815 INFO L124 PetriNetUnfolderBase]: 713/1236 cut-off events. [2024-06-28 02:50:54,815 INFO L125 PetriNetUnfolderBase]: For 148171/148171 co-relation queries the response was YES. [2024-06-28 02:50:54,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10005 conditions, 1236 events. 713/1236 cut-off events. For 148171/148171 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 6324 event pairs, 60 based on Foata normal form. 2/1236 useless extension candidates. Maximal degree in co-relation 9881. Up to 880 conditions per place. [2024-06-28 02:50:54,826 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 193 selfloop transitions, 90 changer transitions 0/285 dead transitions. [2024-06-28 02:50:54,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 285 transitions, 3862 flow [2024-06-28 02:50:54,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:50:54,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:50:54,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-28 02:50:54,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40762463343108507 [2024-06-28 02:50:54,827 INFO L175 Difference]: Start difference. First operand has 279 places, 264 transitions, 3232 flow. Second operand 11 states and 139 transitions. [2024-06-28 02:50:54,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 285 transitions, 3862 flow [2024-06-28 02:50:55,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 285 transitions, 3613 flow, removed 37 selfloop flow, removed 9 redundant places. [2024-06-28 02:50:55,191 INFO L231 Difference]: Finished difference. Result has 281 places, 264 transitions, 3168 flow [2024-06-28 02:50:55,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2983, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3168, PETRI_PLACES=281, PETRI_TRANSITIONS=264} [2024-06-28 02:50:55,192 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 251 predicate places. [2024-06-28 02:50:55,192 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 264 transitions, 3168 flow [2024-06-28 02:50:55,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:55,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:55,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:55,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-28 02:50:55,192 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:50:55,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:55,192 INFO L85 PathProgramCache]: Analyzing trace with hash 194922594, now seen corresponding path program 5 times [2024-06-28 02:50:55,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:55,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798600014] [2024-06-28 02:50:55,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:55,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:55,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:56,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:56,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:56,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798600014] [2024-06-28 02:50:56,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798600014] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:56,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:56,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:50:56,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226621285] [2024-06-28 02:50:56,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:56,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:50:56,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:56,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:50:56,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:50:56,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:50:56,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 264 transitions, 3168 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:56,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:56,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:50:56,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:57,166 INFO L124 PetriNetUnfolderBase]: 717/1244 cut-off events. [2024-06-28 02:50:57,166 INFO L125 PetriNetUnfolderBase]: For 149953/149953 co-relation queries the response was YES. [2024-06-28 02:50:57,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9994 conditions, 1244 events. 717/1244 cut-off events. For 149953/149953 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 6341 event pairs, 80 based on Foata normal form. 2/1244 useless extension candidates. Maximal degree in co-relation 9869. Up to 1031 conditions per place. [2024-06-28 02:50:57,182 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 215 selfloop transitions, 66 changer transitions 0/283 dead transitions. [2024-06-28 02:50:57,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 283 transitions, 3804 flow [2024-06-28 02:50:57,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:50:57,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:50:57,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-28 02:50:57,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-06-28 02:50:57,184 INFO L175 Difference]: Start difference. First operand has 281 places, 264 transitions, 3168 flow. Second operand 11 states and 134 transitions. [2024-06-28 02:50:57,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 283 transitions, 3804 flow [2024-06-28 02:50:57,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 283 transitions, 3581 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-28 02:50:57,555 INFO L231 Difference]: Finished difference. Result has 281 places, 265 transitions, 3107 flow [2024-06-28 02:50:57,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2945, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3107, PETRI_PLACES=281, PETRI_TRANSITIONS=265} [2024-06-28 02:50:57,555 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 251 predicate places. [2024-06-28 02:50:57,556 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 265 transitions, 3107 flow [2024-06-28 02:50:57,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:57,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:57,556 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:57,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-28 02:50:57,556 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:50:57,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:57,556 INFO L85 PathProgramCache]: Analyzing trace with hash 200284974, now seen corresponding path program 6 times [2024-06-28 02:50:57,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:57,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972520043] [2024-06-28 02:50:57,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:57,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:57,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:50:58,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:50:58,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:50:58,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972520043] [2024-06-28 02:50:58,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972520043] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:50:58,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:50:58,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:50:58,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255763124] [2024-06-28 02:50:58,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:50:58,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:50:58,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:50:58,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:50:58,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:50:59,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:50:59,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 265 transitions, 3107 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:59,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:50:59,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:50:59,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:50:59,484 INFO L124 PetriNetUnfolderBase]: 721/1252 cut-off events. [2024-06-28 02:50:59,485 INFO L125 PetriNetUnfolderBase]: For 153341/153341 co-relation queries the response was YES. [2024-06-28 02:50:59,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9985 conditions, 1252 events. 721/1252 cut-off events. For 153341/153341 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 6399 event pairs, 80 based on Foata normal form. 2/1252 useless extension candidates. Maximal degree in co-relation 9859. Up to 1039 conditions per place. [2024-06-28 02:50:59,497 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 215 selfloop transitions, 67 changer transitions 0/284 dead transitions. [2024-06-28 02:50:59,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 284 transitions, 3747 flow [2024-06-28 02:50:59,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:50:59,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:50:59,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-28 02:50:59,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39002932551319647 [2024-06-28 02:50:59,498 INFO L175 Difference]: Start difference. First operand has 281 places, 265 transitions, 3107 flow. Second operand 11 states and 133 transitions. [2024-06-28 02:50:59,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 284 transitions, 3747 flow [2024-06-28 02:50:59,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 284 transitions, 3595 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-28 02:50:59,901 INFO L231 Difference]: Finished difference. Result has 283 places, 266 transitions, 3121 flow [2024-06-28 02:50:59,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2955, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3121, PETRI_PLACES=283, PETRI_TRANSITIONS=266} [2024-06-28 02:50:59,901 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 253 predicate places. [2024-06-28 02:50:59,901 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 266 transitions, 3121 flow [2024-06-28 02:50:59,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:50:59,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:50:59,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:50:59,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-28 02:50:59,902 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:50:59,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:50:59,902 INFO L85 PathProgramCache]: Analyzing trace with hash 194922749, now seen corresponding path program 9 times [2024-06-28 02:50:59,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:50:59,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584951681] [2024-06-28 02:50:59,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:50:59,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:50:59,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:01,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:01,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:01,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584951681] [2024-06-28 02:51:01,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584951681] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:01,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:01,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:51:01,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610785526] [2024-06-28 02:51:01,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:01,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:51:01,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:01,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:51:01,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:51:01,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:51:01,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 266 transitions, 3121 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:01,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:01,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:51:01,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:01,887 INFO L124 PetriNetUnfolderBase]: 727/1262 cut-off events. [2024-06-28 02:51:01,887 INFO L125 PetriNetUnfolderBase]: For 156861/156861 co-relation queries the response was YES. [2024-06-28 02:51:01,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10084 conditions, 1262 events. 727/1262 cut-off events. For 156861/156861 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 6481 event pairs, 51 based on Foata normal form. 2/1262 useless extension candidates. Maximal degree in co-relation 9957. Up to 860 conditions per place. [2024-06-28 02:51:01,900 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 188 selfloop transitions, 103 changer transitions 0/293 dead transitions. [2024-06-28 02:51:01,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 293 transitions, 3852 flow [2024-06-28 02:51:01,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:51:01,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:51:01,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-28 02:51:01,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4252199413489736 [2024-06-28 02:51:01,901 INFO L175 Difference]: Start difference. First operand has 283 places, 266 transitions, 3121 flow. Second operand 11 states and 145 transitions. [2024-06-28 02:51:01,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 293 transitions, 3852 flow [2024-06-28 02:51:02,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 293 transitions, 3696 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-28 02:51:02,446 INFO L231 Difference]: Finished difference. Result has 286 places, 271 transitions, 3332 flow [2024-06-28 02:51:02,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2965, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3332, PETRI_PLACES=286, PETRI_TRANSITIONS=271} [2024-06-28 02:51:02,447 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 256 predicate places. [2024-06-28 02:51:02,447 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 271 transitions, 3332 flow [2024-06-28 02:51:02,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:02,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:02,447 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:51:02,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-28 02:51:02,448 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:51:02,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:02,448 INFO L85 PathProgramCache]: Analyzing trace with hash 667311161, now seen corresponding path program 10 times [2024-06-28 02:51:02,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:02,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23618335] [2024-06-28 02:51:02,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:02,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:02,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:03,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:03,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:03,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23618335] [2024-06-28 02:51:03,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23618335] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:03,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:03,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:51:03,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196077517] [2024-06-28 02:51:03,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:03,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:51:03,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:03,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:51:03,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:51:03,589 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:51:03,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 271 transitions, 3332 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:03,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:03,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:51:03,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:04,073 INFO L124 PetriNetUnfolderBase]: 723/1256 cut-off events. [2024-06-28 02:51:04,074 INFO L125 PetriNetUnfolderBase]: For 151900/151900 co-relation queries the response was YES. [2024-06-28 02:51:04,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10124 conditions, 1256 events. 723/1256 cut-off events. For 151900/151900 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 6451 event pairs, 73 based on Foata normal form. 2/1256 useless extension candidates. Maximal degree in co-relation 9995. Up to 619 conditions per place. [2024-06-28 02:51:04,083 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 164 selfloop transitions, 126 changer transitions 0/292 dead transitions. [2024-06-28 02:51:04,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 292 transitions, 4160 flow [2024-06-28 02:51:04,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:51:04,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:51:04,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 138 transitions. [2024-06-28 02:51:04,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44516129032258067 [2024-06-28 02:51:04,084 INFO L175 Difference]: Start difference. First operand has 286 places, 271 transitions, 3332 flow. Second operand 10 states and 138 transitions. [2024-06-28 02:51:04,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 292 transitions, 4160 flow [2024-06-28 02:51:04,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 292 transitions, 3942 flow, removed 40 selfloop flow, removed 8 redundant places. [2024-06-28 02:51:04,450 INFO L231 Difference]: Finished difference. Result has 288 places, 271 transitions, 3377 flow [2024-06-28 02:51:04,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3114, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3377, PETRI_PLACES=288, PETRI_TRANSITIONS=271} [2024-06-28 02:51:04,451 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 258 predicate places. [2024-06-28 02:51:04,451 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 271 transitions, 3377 flow [2024-06-28 02:51:04,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:04,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:04,451 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:51:04,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-28 02:51:04,451 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:51:04,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:04,451 INFO L85 PathProgramCache]: Analyzing trace with hash -832980902, now seen corresponding path program 7 times [2024-06-28 02:51:04,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:04,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55290455] [2024-06-28 02:51:04,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:04,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:04,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:05,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:05,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:05,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55290455] [2024-06-28 02:51:05,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55290455] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:05,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:05,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:51:05,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807389387] [2024-06-28 02:51:05,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:05,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:51:05,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:05,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:51:05,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:51:05,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:51:05,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 271 transitions, 3377 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:05,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:05,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:51:05,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:06,231 INFO L124 PetriNetUnfolderBase]: 727/1264 cut-off events. [2024-06-28 02:51:06,231 INFO L125 PetriNetUnfolderBase]: For 155616/155616 co-relation queries the response was YES. [2024-06-28 02:51:06,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10223 conditions, 1264 events. 727/1264 cut-off events. For 155616/155616 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 6510 event pairs, 81 based on Foata normal form. 2/1264 useless extension candidates. Maximal degree in co-relation 10093. Up to 1036 conditions per place. [2024-06-28 02:51:06,244 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 216 selfloop transitions, 73 changer transitions 0/291 dead transitions. [2024-06-28 02:51:06,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 291 transitions, 4035 flow [2024-06-28 02:51:06,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:51:06,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:51:06,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 144 transitions. [2024-06-28 02:51:06,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-28 02:51:06,245 INFO L175 Difference]: Start difference. First operand has 288 places, 271 transitions, 3377 flow. Second operand 12 states and 144 transitions. [2024-06-28 02:51:06,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 291 transitions, 4035 flow [2024-06-28 02:51:06,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 291 transitions, 3713 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-28 02:51:06,573 INFO L231 Difference]: Finished difference. Result has 289 places, 272 transitions, 3237 flow [2024-06-28 02:51:06,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3055, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3237, PETRI_PLACES=289, PETRI_TRANSITIONS=272} [2024-06-28 02:51:06,573 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 259 predicate places. [2024-06-28 02:51:06,573 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 272 transitions, 3237 flow [2024-06-28 02:51:06,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:06,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:06,574 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:51:06,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-28 02:51:06,574 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:51:06,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:06,574 INFO L85 PathProgramCache]: Analyzing trace with hash -832984622, now seen corresponding path program 8 times [2024-06-28 02:51:06,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:06,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815336568] [2024-06-28 02:51:06,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:06,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:06,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:07,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:07,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:07,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815336568] [2024-06-28 02:51:07,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815336568] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:07,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:07,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:51:07,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358078332] [2024-06-28 02:51:07,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:07,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:51:07,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:07,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:51:07,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:51:07,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:51:07,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 272 transitions, 3237 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:07,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:07,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:51:07,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:08,416 INFO L124 PetriNetUnfolderBase]: 731/1272 cut-off events. [2024-06-28 02:51:08,416 INFO L125 PetriNetUnfolderBase]: For 151500/151500 co-relation queries the response was YES. [2024-06-28 02:51:08,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10061 conditions, 1272 events. 731/1272 cut-off events. For 151500/151500 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 6573 event pairs, 79 based on Foata normal form. 2/1272 useless extension candidates. Maximal degree in co-relation 9931. Up to 1024 conditions per place. [2024-06-28 02:51:08,429 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 216 selfloop transitions, 74 changer transitions 0/292 dead transitions. [2024-06-28 02:51:08,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 292 transitions, 3899 flow [2024-06-28 02:51:08,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:51:08,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:51:08,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-28 02:51:08,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39882697947214074 [2024-06-28 02:51:08,431 INFO L175 Difference]: Start difference. First operand has 289 places, 272 transitions, 3237 flow. Second operand 11 states and 136 transitions. [2024-06-28 02:51:08,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 292 transitions, 3899 flow [2024-06-28 02:51:08,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 292 transitions, 3727 flow, removed 15 selfloop flow, removed 10 redundant places. [2024-06-28 02:51:08,829 INFO L231 Difference]: Finished difference. Result has 290 places, 273 transitions, 3249 flow [2024-06-28 02:51:08,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3067, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3249, PETRI_PLACES=290, PETRI_TRANSITIONS=273} [2024-06-28 02:51:08,830 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 260 predicate places. [2024-06-28 02:51:08,830 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 273 transitions, 3249 flow [2024-06-28 02:51:08,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:08,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:08,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:51:08,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-28 02:51:08,831 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:51:08,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:08,831 INFO L85 PathProgramCache]: Analyzing trace with hash 213935687, now seen corresponding path program 2 times [2024-06-28 02:51:08,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:08,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973216006] [2024-06-28 02:51:08,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:08,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:08,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:10,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:10,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:10,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973216006] [2024-06-28 02:51:10,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973216006] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:10,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:10,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:51:10,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907941184] [2024-06-28 02:51:10,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:10,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:51:10,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:10,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:51:10,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:51:10,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:51:10,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 273 transitions, 3249 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:10,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:10,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:51:10,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:11,157 INFO L124 PetriNetUnfolderBase]: 735/1280 cut-off events. [2024-06-28 02:51:11,158 INFO L125 PetriNetUnfolderBase]: For 151359/151359 co-relation queries the response was YES. [2024-06-28 02:51:11,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10054 conditions, 1280 events. 735/1280 cut-off events. For 151359/151359 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 6629 event pairs, 88 based on Foata normal form. 2/1280 useless extension candidates. Maximal degree in co-relation 9923. Up to 1202 conditions per place. [2024-06-28 02:51:11,171 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 258 selfloop transitions, 30 changer transitions 0/290 dead transitions. [2024-06-28 02:51:11,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 290 transitions, 3882 flow [2024-06-28 02:51:11,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:51:11,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:51:11,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-28 02:51:11,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3741935483870968 [2024-06-28 02:51:11,172 INFO L175 Difference]: Start difference. First operand has 290 places, 273 transitions, 3249 flow. Second operand 10 states and 116 transitions. [2024-06-28 02:51:11,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 290 transitions, 3882 flow [2024-06-28 02:51:11,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 290 transitions, 3710 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-28 02:51:11,626 INFO L231 Difference]: Finished difference. Result has 292 places, 275 transitions, 3165 flow [2024-06-28 02:51:11,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3077, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3165, PETRI_PLACES=292, PETRI_TRANSITIONS=275} [2024-06-28 02:51:11,626 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 262 predicate places. [2024-06-28 02:51:11,626 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 275 transitions, 3165 flow [2024-06-28 02:51:11,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:11,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:11,627 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:51:11,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-28 02:51:11,627 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:51:11,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:11,627 INFO L85 PathProgramCache]: Analyzing trace with hash 206526377, now seen corresponding path program 3 times [2024-06-28 02:51:11,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:11,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320673319] [2024-06-28 02:51:11,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:11,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:11,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:13,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:13,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:13,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320673319] [2024-06-28 02:51:13,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320673319] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:13,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:13,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:51:13,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426824636] [2024-06-28 02:51:13,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:13,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:51:13,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:13,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:51:13,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:51:13,517 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:51:13,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 275 transitions, 3165 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:13,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:13,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:51:13,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:13,934 INFO L124 PetriNetUnfolderBase]: 739/1288 cut-off events. [2024-06-28 02:51:13,935 INFO L125 PetriNetUnfolderBase]: For 153769/153769 co-relation queries the response was YES. [2024-06-28 02:51:13,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9979 conditions, 1288 events. 739/1288 cut-off events. For 153769/153769 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 6692 event pairs, 88 based on Foata normal form. 2/1288 useless extension candidates. Maximal degree in co-relation 9846. Up to 1201 conditions per place. [2024-06-28 02:51:13,947 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 257 selfloop transitions, 33 changer transitions 0/292 dead transitions. [2024-06-28 02:51:13,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 292 transitions, 3799 flow [2024-06-28 02:51:13,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:51:13,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:51:13,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-28 02:51:13,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38387096774193546 [2024-06-28 02:51:13,947 INFO L175 Difference]: Start difference. First operand has 292 places, 275 transitions, 3165 flow. Second operand 10 states and 119 transitions. [2024-06-28 02:51:13,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 292 transitions, 3799 flow [2024-06-28 02:51:14,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 292 transitions, 3738 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-28 02:51:14,295 INFO L231 Difference]: Finished difference. Result has 295 places, 276 transitions, 3186 flow [2024-06-28 02:51:14,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3104, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3186, PETRI_PLACES=295, PETRI_TRANSITIONS=276} [2024-06-28 02:51:14,296 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 265 predicate places. [2024-06-28 02:51:14,296 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 276 transitions, 3186 flow [2024-06-28 02:51:14,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:14,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:14,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:51:14,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-28 02:51:14,297 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:51:14,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:14,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1241704333, now seen corresponding path program 4 times [2024-06-28 02:51:14,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:14,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165504363] [2024-06-28 02:51:14,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:14,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:14,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:16,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:16,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:16,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165504363] [2024-06-28 02:51:16,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165504363] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:16,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:16,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:51:16,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565080304] [2024-06-28 02:51:16,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:16,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:51:16,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:16,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:51:16,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:51:16,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:51:16,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 276 transitions, 3186 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:16,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:16,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:51:16,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:16,618 INFO L124 PetriNetUnfolderBase]: 743/1296 cut-off events. [2024-06-28 02:51:16,618 INFO L125 PetriNetUnfolderBase]: For 156915/156915 co-relation queries the response was YES. [2024-06-28 02:51:16,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10060 conditions, 1296 events. 743/1296 cut-off events. For 156915/156915 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 6766 event pairs, 75 based on Foata normal form. 2/1296 useless extension candidates. Maximal degree in co-relation 9926. Up to 1209 conditions per place. [2024-06-28 02:51:16,630 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 258 selfloop transitions, 32 changer transitions 0/292 dead transitions. [2024-06-28 02:51:16,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 292 transitions, 3816 flow [2024-06-28 02:51:16,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:51:16,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:51:16,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-28 02:51:16,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3741935483870968 [2024-06-28 02:51:16,631 INFO L175 Difference]: Start difference. First operand has 295 places, 276 transitions, 3186 flow. Second operand 10 states and 116 transitions. [2024-06-28 02:51:16,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 292 transitions, 3816 flow [2024-06-28 02:51:17,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 292 transitions, 3744 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-28 02:51:17,030 INFO L231 Difference]: Finished difference. Result has 297 places, 277 transitions, 3196 flow [2024-06-28 02:51:17,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3114, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3196, PETRI_PLACES=297, PETRI_TRANSITIONS=277} [2024-06-28 02:51:17,031 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 267 predicate places. [2024-06-28 02:51:17,031 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 277 transitions, 3196 flow [2024-06-28 02:51:17,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:17,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:17,032 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:51:17,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-28 02:51:17,032 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:51:17,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:17,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1732919893, now seen corresponding path program 11 times [2024-06-28 02:51:17,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:17,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681610233] [2024-06-28 02:51:17,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:17,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:17,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:18,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:18,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:18,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681610233] [2024-06-28 02:51:18,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681610233] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:18,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:18,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:51:18,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308692679] [2024-06-28 02:51:18,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:18,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:51:18,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:18,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:51:18,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:51:18,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:51:18,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 277 transitions, 3196 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:18,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:18,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:51:18,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:19,091 INFO L124 PetriNetUnfolderBase]: 749/1306 cut-off events. [2024-06-28 02:51:19,091 INFO L125 PetriNetUnfolderBase]: For 160589/160589 co-relation queries the response was YES. [2024-06-28 02:51:19,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10191 conditions, 1306 events. 749/1306 cut-off events. For 160589/160589 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 6817 event pairs, 80 based on Foata normal form. 2/1306 useless extension candidates. Maximal degree in co-relation 10056. Up to 1192 conditions per place. [2024-06-28 02:51:19,108 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 255 selfloop transitions, 40 changer transitions 0/297 dead transitions. [2024-06-28 02:51:19,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 297 transitions, 3896 flow [2024-06-28 02:51:19,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:51:19,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:51:19,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-28 02:51:19,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3841642228739003 [2024-06-28 02:51:19,110 INFO L175 Difference]: Start difference. First operand has 297 places, 277 transitions, 3196 flow. Second operand 11 states and 131 transitions. [2024-06-28 02:51:19,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 297 transitions, 3896 flow [2024-06-28 02:51:19,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 297 transitions, 3824 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-28 02:51:19,534 INFO L231 Difference]: Finished difference. Result has 300 places, 279 transitions, 3271 flow [2024-06-28 02:51:19,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3124, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3271, PETRI_PLACES=300, PETRI_TRANSITIONS=279} [2024-06-28 02:51:19,534 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 270 predicate places. [2024-06-28 02:51:19,535 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 279 transitions, 3271 flow [2024-06-28 02:51:19,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:19,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:19,535 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:51:19,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-28 02:51:19,535 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:51:19,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:19,536 INFO L85 PathProgramCache]: Analyzing trace with hash 6861236, now seen corresponding path program 9 times [2024-06-28 02:51:19,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:19,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701829533] [2024-06-28 02:51:19,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:19,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:19,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:20,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:20,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:20,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701829533] [2024-06-28 02:51:20,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701829533] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:20,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:20,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:51:20,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274115940] [2024-06-28 02:51:20,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:20,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:51:20,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:20,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:51:20,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:51:21,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:51:21,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 279 transitions, 3271 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:21,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:21,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:51:21,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:21,563 INFO L124 PetriNetUnfolderBase]: 789/1386 cut-off events. [2024-06-28 02:51:21,564 INFO L125 PetriNetUnfolderBase]: For 219802/219802 co-relation queries the response was YES. [2024-06-28 02:51:21,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11849 conditions, 1386 events. 789/1386 cut-off events. For 219802/219802 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 7291 event pairs, 106 based on Foata normal form. 2/1386 useless extension candidates. Maximal degree in co-relation 11713. Up to 1169 conditions per place. [2024-06-28 02:51:21,578 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 253 selfloop transitions, 50 changer transitions 0/305 dead transitions. [2024-06-28 02:51:21,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 305 transitions, 4241 flow [2024-06-28 02:51:21,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:51:21,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:51:21,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-28 02:51:21,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41348973607038125 [2024-06-28 02:51:21,579 INFO L175 Difference]: Start difference. First operand has 300 places, 279 transitions, 3271 flow. Second operand 11 states and 141 transitions. [2024-06-28 02:51:21,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 305 transitions, 4241 flow [2024-06-28 02:51:22,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 305 transitions, 4122 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-28 02:51:22,189 INFO L231 Difference]: Finished difference. Result has 302 places, 281 transitions, 3318 flow [2024-06-28 02:51:22,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3152, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3318, PETRI_PLACES=302, PETRI_TRANSITIONS=281} [2024-06-28 02:51:22,190 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 272 predicate places. [2024-06-28 02:51:22,190 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 281 transitions, 3318 flow [2024-06-28 02:51:22,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:22,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:22,190 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:51:22,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-28 02:51:22,190 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:51:22,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:22,191 INFO L85 PathProgramCache]: Analyzing trace with hash 6864956, now seen corresponding path program 10 times [2024-06-28 02:51:22,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:22,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318538806] [2024-06-28 02:51:22,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:22,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:22,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:23,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:23,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:23,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318538806] [2024-06-28 02:51:23,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318538806] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:23,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:23,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:51:23,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218063368] [2024-06-28 02:51:23,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:23,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:51:23,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:23,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:51:23,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:51:23,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:51:23,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 281 transitions, 3318 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:23,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:23,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:51:23,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:24,244 INFO L124 PetriNetUnfolderBase]: 796/1399 cut-off events. [2024-06-28 02:51:24,244 INFO L125 PetriNetUnfolderBase]: For 224085/224085 co-relation queries the response was YES. [2024-06-28 02:51:24,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11972 conditions, 1399 events. 796/1399 cut-off events. For 224085/224085 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 7402 event pairs, 102 based on Foata normal form. 2/1399 useless extension candidates. Maximal degree in co-relation 11835. Up to 1267 conditions per place. [2024-06-28 02:51:24,257 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 249 selfloop transitions, 51 changer transitions 0/302 dead transitions. [2024-06-28 02:51:24,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 302 transitions, 4020 flow [2024-06-28 02:51:24,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:51:24,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:51:24,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-28 02:51:24,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39589442815249265 [2024-06-28 02:51:24,259 INFO L175 Difference]: Start difference. First operand has 302 places, 281 transitions, 3318 flow. Second operand 11 states and 135 transitions. [2024-06-28 02:51:24,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 302 transitions, 4020 flow [2024-06-28 02:51:24,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 302 transitions, 3926 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-28 02:51:24,881 INFO L231 Difference]: Finished difference. Result has 307 places, 284 transitions, 3384 flow [2024-06-28 02:51:24,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3230, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3384, PETRI_PLACES=307, PETRI_TRANSITIONS=284} [2024-06-28 02:51:24,881 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 277 predicate places. [2024-06-28 02:51:24,881 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 284 transitions, 3384 flow [2024-06-28 02:51:24,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:24,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:24,881 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:51:24,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-28 02:51:24,881 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:51:24,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:24,882 INFO L85 PathProgramCache]: Analyzing trace with hash 206518441, now seen corresponding path program 12 times [2024-06-28 02:51:24,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:24,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983739970] [2024-06-28 02:51:24,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:24,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:24,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:26,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:26,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:26,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983739970] [2024-06-28 02:51:26,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983739970] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:26,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:26,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:51:26,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349640068] [2024-06-28 02:51:26,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:26,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:51:26,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:26,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:51:26,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:51:26,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:51:26,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 284 transitions, 3384 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:26,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:26,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:51:26,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:27,304 INFO L124 PetriNetUnfolderBase]: 792/1393 cut-off events. [2024-06-28 02:51:27,305 INFO L125 PetriNetUnfolderBase]: For 218494/218494 co-relation queries the response was YES. [2024-06-28 02:51:27,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11781 conditions, 1393 events. 792/1393 cut-off events. For 218494/218494 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 7400 event pairs, 103 based on Foata normal form. 2/1393 useless extension candidates. Maximal degree in co-relation 11642. Up to 1279 conditions per place. [2024-06-28 02:51:27,326 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 261 selfloop transitions, 39 changer transitions 0/302 dead transitions. [2024-06-28 02:51:27,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 302 transitions, 4036 flow [2024-06-28 02:51:27,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:51:27,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:51:27,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-28 02:51:27,327 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-28 02:51:27,327 INFO L175 Difference]: Start difference. First operand has 307 places, 284 transitions, 3384 flow. Second operand 11 states and 132 transitions. [2024-06-28 02:51:27,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 302 transitions, 4036 flow [2024-06-28 02:51:27,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 302 transitions, 3884 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-28 02:51:27,992 INFO L231 Difference]: Finished difference. Result has 310 places, 284 transitions, 3315 flow [2024-06-28 02:51:27,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3232, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3315, PETRI_PLACES=310, PETRI_TRANSITIONS=284} [2024-06-28 02:51:27,992 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 280 predicate places. [2024-06-28 02:51:27,992 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 284 transitions, 3315 flow [2024-06-28 02:51:27,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:27,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:27,992 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:51:27,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-28 02:51:27,993 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:51:27,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:27,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1234070242, now seen corresponding path program 11 times [2024-06-28 02:51:27,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:27,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018789233] [2024-06-28 02:51:27,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:27,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:28,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:29,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:29,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:29,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018789233] [2024-06-28 02:51:29,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018789233] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:29,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:29,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:51:29,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665809055] [2024-06-28 02:51:29,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:29,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:51:29,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:29,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:51:29,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:51:29,580 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:51:29,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 284 transitions, 3315 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:29,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:29,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:51:29,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:30,128 INFO L124 PetriNetUnfolderBase]: 795/1406 cut-off events. [2024-06-28 02:51:30,128 INFO L125 PetriNetUnfolderBase]: For 260230/260230 co-relation queries the response was YES. [2024-06-28 02:51:30,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10826 conditions, 1406 events. 795/1406 cut-off events. For 260230/260230 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 7554 event pairs, 104 based on Foata normal form. 20/1424 useless extension candidates. Maximal degree in co-relation 10686. Up to 1231 conditions per place. [2024-06-28 02:51:30,141 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 262 selfloop transitions, 34 changer transitions 10/308 dead transitions. [2024-06-28 02:51:30,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 308 transitions, 4075 flow [2024-06-28 02:51:30,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:51:30,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:51:30,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-28 02:51:30,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39882697947214074 [2024-06-28 02:51:30,142 INFO L175 Difference]: Start difference. First operand has 310 places, 284 transitions, 3315 flow. Second operand 11 states and 136 transitions. [2024-06-28 02:51:30,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 308 transitions, 4075 flow [2024-06-28 02:51:30,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 308 transitions, 3969 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-06-28 02:51:30,620 INFO L231 Difference]: Finished difference. Result has 311 places, 282 transitions, 3271 flow [2024-06-28 02:51:30,620 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3209, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3271, PETRI_PLACES=311, PETRI_TRANSITIONS=282} [2024-06-28 02:51:30,620 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 281 predicate places. [2024-06-28 02:51:30,620 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 282 transitions, 3271 flow [2024-06-28 02:51:30,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:30,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:30,621 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:51:30,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-28 02:51:30,621 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:51:30,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:30,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1034624457, now seen corresponding path program 13 times [2024-06-28 02:51:30,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:30,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882462022] [2024-06-28 02:51:30,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:30,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:30,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:31,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:31,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:31,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882462022] [2024-06-28 02:51:31,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882462022] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:31,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:31,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:51:31,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977462266] [2024-06-28 02:51:31,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:31,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:51:31,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:31,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:51:31,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:51:31,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:51:31,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 282 transitions, 3271 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:31,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:31,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:51:31,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:32,210 INFO L124 PetriNetUnfolderBase]: 767/1344 cut-off events. [2024-06-28 02:51:32,210 INFO L125 PetriNetUnfolderBase]: For 188838/188838 co-relation queries the response was YES. [2024-06-28 02:51:32,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10872 conditions, 1344 events. 767/1344 cut-off events. For 188838/188838 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 7133 event pairs, 87 based on Foata normal form. 2/1344 useless extension candidates. Maximal degree in co-relation 10731. Up to 1127 conditions per place. [2024-06-28 02:51:32,224 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 243 selfloop transitions, 60 changer transitions 0/305 dead transitions. [2024-06-28 02:51:32,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 305 transitions, 4475 flow [2024-06-28 02:51:32,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:51:32,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:51:32,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-28 02:51:32,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42258064516129035 [2024-06-28 02:51:32,225 INFO L175 Difference]: Start difference. First operand has 311 places, 282 transitions, 3271 flow. Second operand 10 states and 131 transitions. [2024-06-28 02:51:32,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 305 transitions, 4475 flow [2024-06-28 02:51:32,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 305 transitions, 4359 flow, removed 19 selfloop flow, removed 10 redundant places. [2024-06-28 02:51:32,758 INFO L231 Difference]: Finished difference. Result has 311 places, 286 transitions, 3428 flow [2024-06-28 02:51:32,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3159, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3428, PETRI_PLACES=311, PETRI_TRANSITIONS=286} [2024-06-28 02:51:32,758 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 281 predicate places. [2024-06-28 02:51:32,758 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 286 transitions, 3428 flow [2024-06-28 02:51:32,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:32,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:32,758 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:51:32,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-28 02:51:32,759 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:51:32,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:32,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1034774187, now seen corresponding path program 14 times [2024-06-28 02:51:32,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:32,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324197055] [2024-06-28 02:51:32,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:32,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:32,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:34,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:34,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:34,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324197055] [2024-06-28 02:51:34,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324197055] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:34,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:34,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:51:34,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278318780] [2024-06-28 02:51:34,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:34,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:51:34,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:34,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:51:34,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:51:34,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:51:34,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 286 transitions, 3428 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:34,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:34,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:51:34,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:35,548 INFO L124 PetriNetUnfolderBase]: 763/1338 cut-off events. [2024-06-28 02:51:35,548 INFO L125 PetriNetUnfolderBase]: For 181775/181775 co-relation queries the response was YES. [2024-06-28 02:51:35,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10632 conditions, 1338 events. 763/1338 cut-off events. For 181775/181775 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 7095 event pairs, 73 based on Foata normal form. 2/1338 useless extension candidates. Maximal degree in co-relation 10491. Up to 1180 conditions per place. [2024-06-28 02:51:35,565 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 249 selfloop transitions, 53 changer transitions 0/304 dead transitions. [2024-06-28 02:51:35,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 304 transitions, 4084 flow [2024-06-28 02:51:35,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:51:35,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:51:35,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-28 02:51:35,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39589442815249265 [2024-06-28 02:51:35,567 INFO L175 Difference]: Start difference. First operand has 311 places, 286 transitions, 3428 flow. Second operand 11 states and 135 transitions. [2024-06-28 02:51:35,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 304 transitions, 4084 flow [2024-06-28 02:51:36,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 304 transitions, 3733 flow, removed 63 selfloop flow, removed 10 redundant places. [2024-06-28 02:51:36,141 INFO L231 Difference]: Finished difference. Result has 312 places, 286 transitions, 3188 flow [2024-06-28 02:51:36,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3077, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3188, PETRI_PLACES=312, PETRI_TRANSITIONS=286} [2024-06-28 02:51:36,141 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 282 predicate places. [2024-06-28 02:51:36,141 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 286 transitions, 3188 flow [2024-06-28 02:51:36,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:36,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:36,142 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:51:36,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-28 02:51:36,142 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:51:36,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:36,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1234070397, now seen corresponding path program 15 times [2024-06-28 02:51:36,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:36,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423341690] [2024-06-28 02:51:36,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:36,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:36,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:37,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:37,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:37,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423341690] [2024-06-28 02:51:37,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423341690] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:37,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:37,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:51:37,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050120325] [2024-06-28 02:51:37,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:37,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:51:37,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:37,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:51:37,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:51:37,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:51:37,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 286 transitions, 3188 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:37,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:37,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:51:37,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:38,168 INFO L124 PetriNetUnfolderBase]: 759/1332 cut-off events. [2024-06-28 02:51:38,168 INFO L125 PetriNetUnfolderBase]: For 168642/168642 co-relation queries the response was YES. [2024-06-28 02:51:38,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9980 conditions, 1332 events. 759/1332 cut-off events. For 168642/168642 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 7071 event pairs, 83 based on Foata normal form. 2/1332 useless extension candidates. Maximal degree in co-relation 9841. Up to 1209 conditions per place. [2024-06-28 02:51:38,182 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 259 selfloop transitions, 43 changer transitions 0/304 dead transitions. [2024-06-28 02:51:38,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 304 transitions, 3844 flow [2024-06-28 02:51:38,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:51:38,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:51:38,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-28 02:51:38,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-28 02:51:38,183 INFO L175 Difference]: Start difference. First operand has 312 places, 286 transitions, 3188 flow. Second operand 11 states and 132 transitions. [2024-06-28 02:51:38,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 304 transitions, 3844 flow [2024-06-28 02:51:38,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 304 transitions, 3695 flow, removed 18 selfloop flow, removed 10 redundant places. [2024-06-28 02:51:38,674 INFO L231 Difference]: Finished difference. Result has 313 places, 286 transitions, 3130 flow [2024-06-28 02:51:38,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3039, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3130, PETRI_PLACES=313, PETRI_TRANSITIONS=286} [2024-06-28 02:51:38,675 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 283 predicate places. [2024-06-28 02:51:38,675 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 286 transitions, 3130 flow [2024-06-28 02:51:38,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:38,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:38,675 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:51:38,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-28 02:51:38,675 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:51:38,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:38,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1034768452, now seen corresponding path program 12 times [2024-06-28 02:51:38,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:38,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197409536] [2024-06-28 02:51:38,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:38,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:38,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:39,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:39,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:39,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197409536] [2024-06-28 02:51:39,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197409536] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:39,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:39,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:51:39,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83180854] [2024-06-28 02:51:40,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:40,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:51:40,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:40,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:51:40,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:51:40,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:51:40,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 286 transitions, 3130 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:40,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:40,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:51:40,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:40,579 INFO L124 PetriNetUnfolderBase]: 763/1340 cut-off events. [2024-06-28 02:51:40,579 INFO L125 PetriNetUnfolderBase]: For 171678/171678 co-relation queries the response was YES. [2024-06-28 02:51:40,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9993 conditions, 1340 events. 763/1340 cut-off events. For 171678/171678 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 7126 event pairs, 89 based on Foata normal form. 2/1340 useless extension candidates. Maximal degree in co-relation 9853. Up to 1236 conditions per place. [2024-06-28 02:51:40,593 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 260 selfloop transitions, 41 changer transitions 0/303 dead transitions. [2024-06-28 02:51:40,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 303 transitions, 3800 flow [2024-06-28 02:51:40,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:51:40,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:51:40,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-28 02:51:40,594 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3812316715542522 [2024-06-28 02:51:40,595 INFO L175 Difference]: Start difference. First operand has 313 places, 286 transitions, 3130 flow. Second operand 11 states and 130 transitions. [2024-06-28 02:51:40,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 303 transitions, 3800 flow [2024-06-28 02:51:41,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 303 transitions, 3706 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-28 02:51:41,092 INFO L231 Difference]: Finished difference. Result has 314 places, 287 transitions, 3150 flow [2024-06-28 02:51:41,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3036, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3150, PETRI_PLACES=314, PETRI_TRANSITIONS=287} [2024-06-28 02:51:41,092 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 284 predicate places. [2024-06-28 02:51:41,092 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 287 transitions, 3150 flow [2024-06-28 02:51:41,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:41,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:41,093 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:51:41,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-28 02:51:41,093 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:51:41,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:41,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1040346313, now seen corresponding path program 5 times [2024-06-28 02:51:41,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:41,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306807653] [2024-06-28 02:51:41,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:41,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:41,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:42,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:42,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:42,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306807653] [2024-06-28 02:51:42,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306807653] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:42,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:42,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:51:42,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173247546] [2024-06-28 02:51:42,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:42,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:51:42,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:42,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:51:42,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:51:42,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:51:42,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 287 transitions, 3150 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:42,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:42,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:51:42,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:43,225 INFO L124 PetriNetUnfolderBase]: 767/1348 cut-off events. [2024-06-28 02:51:43,226 INFO L125 PetriNetUnfolderBase]: For 175005/175005 co-relation queries the response was YES. [2024-06-28 02:51:43,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10054 conditions, 1348 events. 767/1348 cut-off events. For 175005/175005 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 7206 event pairs, 95 based on Foata normal form. 2/1348 useless extension candidates. Maximal degree in co-relation 9913. Up to 1247 conditions per place. [2024-06-28 02:51:43,240 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 267 selfloop transitions, 35 changer transitions 0/304 dead transitions. [2024-06-28 02:51:43,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 304 transitions, 3812 flow [2024-06-28 02:51:43,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:51:43,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:51:43,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-28 02:51:43,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3903225806451613 [2024-06-28 02:51:43,241 INFO L175 Difference]: Start difference. First operand has 314 places, 287 transitions, 3150 flow. Second operand 10 states and 121 transitions. [2024-06-28 02:51:43,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 304 transitions, 3812 flow [2024-06-28 02:51:43,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 304 transitions, 3694 flow, removed 11 selfloop flow, removed 10 redundant places. [2024-06-28 02:51:43,779 INFO L231 Difference]: Finished difference. Result has 314 places, 288 transitions, 3122 flow [2024-06-28 02:51:43,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3032, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3122, PETRI_PLACES=314, PETRI_TRANSITIONS=288} [2024-06-28 02:51:43,779 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 284 predicate places. [2024-06-28 02:51:43,779 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 288 transitions, 3122 flow [2024-06-28 02:51:43,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:43,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:43,780 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:51:43,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-28 02:51:43,780 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:51:43,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:43,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1040338377, now seen corresponding path program 16 times [2024-06-28 02:51:43,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:43,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917121163] [2024-06-28 02:51:43,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:43,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:43,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:45,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:45,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:45,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917121163] [2024-06-28 02:51:45,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917121163] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:45,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:45,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:51:45,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307942394] [2024-06-28 02:51:45,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:45,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:51:45,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:45,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:51:45,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:51:45,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:51:45,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 288 transitions, 3122 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:45,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:45,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:51:45,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:46,496 INFO L124 PetriNetUnfolderBase]: 773/1358 cut-off events. [2024-06-28 02:51:46,496 INFO L125 PetriNetUnfolderBase]: For 178650/178650 co-relation queries the response was YES. [2024-06-28 02:51:46,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10139 conditions, 1358 events. 773/1358 cut-off events. For 178650/178650 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 7257 event pairs, 74 based on Foata normal form. 2/1358 useless extension candidates. Maximal degree in co-relation 9997. Up to 1200 conditions per place. [2024-06-28 02:51:46,510 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 254 selfloop transitions, 52 changer transitions 0/308 dead transitions. [2024-06-28 02:51:46,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 308 transitions, 3842 flow [2024-06-28 02:51:46,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:51:46,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:51:46,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-28 02:51:46,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39882697947214074 [2024-06-28 02:51:46,511 INFO L175 Difference]: Start difference. First operand has 314 places, 288 transitions, 3122 flow. Second operand 11 states and 136 transitions. [2024-06-28 02:51:46,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 308 transitions, 3842 flow [2024-06-28 02:51:47,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 308 transitions, 3762 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-28 02:51:47,020 INFO L231 Difference]: Finished difference. Result has 317 places, 290 transitions, 3211 flow [2024-06-28 02:51:47,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3042, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3211, PETRI_PLACES=317, PETRI_TRANSITIONS=290} [2024-06-28 02:51:47,020 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 287 predicate places. [2024-06-28 02:51:47,020 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 290 transitions, 3211 flow [2024-06-28 02:51:47,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:47,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:47,021 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:51:47,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-28 02:51:47,021 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:51:47,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:47,022 INFO L85 PathProgramCache]: Analyzing trace with hash 12377221, now seen corresponding path program 17 times [2024-06-28 02:51:47,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:47,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668092390] [2024-06-28 02:51:47,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:47,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:47,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:48,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:48,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:48,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668092390] [2024-06-28 02:51:48,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668092390] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:48,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:48,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:51:48,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225495740] [2024-06-28 02:51:48,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:48,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:51:48,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:48,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:51:48,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:51:48,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:51:48,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 290 transitions, 3211 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:48,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:48,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:51:48,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:49,359 INFO L124 PetriNetUnfolderBase]: 779/1368 cut-off events. [2024-06-28 02:51:49,359 INFO L125 PetriNetUnfolderBase]: For 182866/182866 co-relation queries the response was YES. [2024-06-28 02:51:49,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10317 conditions, 1368 events. 779/1368 cut-off events. For 182866/182866 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 7363 event pairs, 87 based on Foata normal form. 2/1368 useless extension candidates. Maximal degree in co-relation 10174. Up to 1219 conditions per place. [2024-06-28 02:51:49,375 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 261 selfloop transitions, 48 changer transitions 0/311 dead transitions. [2024-06-28 02:51:49,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 311 transitions, 3945 flow [2024-06-28 02:51:49,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:51:49,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:51:49,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-28 02:51:49,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40175953079178883 [2024-06-28 02:51:49,376 INFO L175 Difference]: Start difference. First operand has 317 places, 290 transitions, 3211 flow. Second operand 11 states and 137 transitions. [2024-06-28 02:51:49,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 311 transitions, 3945 flow [2024-06-28 02:51:49,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 311 transitions, 3800 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-28 02:51:49,906 INFO L231 Difference]: Finished difference. Result has 319 places, 292 transitions, 3231 flow [2024-06-28 02:51:49,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3066, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3231, PETRI_PLACES=319, PETRI_TRANSITIONS=292} [2024-06-28 02:51:49,906 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 289 predicate places. [2024-06-28 02:51:49,906 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 292 transitions, 3231 flow [2024-06-28 02:51:49,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:49,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:49,906 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:51:49,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-28 02:51:49,907 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:51:49,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:49,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1040130832, now seen corresponding path program 13 times [2024-06-28 02:51:49,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:49,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919869611] [2024-06-28 02:51:49,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:49,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:49,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:51,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:51,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:51,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919869611] [2024-06-28 02:51:51,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919869611] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:51,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:51,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:51:51,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025475470] [2024-06-28 02:51:51,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:51,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:51:51,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:51,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:51:51,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:51:51,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:51:51,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 292 transitions, 3231 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:51,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:51,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:51:51,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:51,909 INFO L124 PetriNetUnfolderBase]: 776/1363 cut-off events. [2024-06-28 02:51:51,909 INFO L125 PetriNetUnfolderBase]: For 174418/174418 co-relation queries the response was YES. [2024-06-28 02:51:51,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10039 conditions, 1363 events. 776/1363 cut-off events. For 174418/174418 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 7304 event pairs, 100 based on Foata normal form. 2/1363 useless extension candidates. Maximal degree in co-relation 9895. Up to 1259 conditions per place. [2024-06-28 02:51:51,924 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 266 selfloop transitions, 40 changer transitions 0/308 dead transitions. [2024-06-28 02:51:51,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 308 transitions, 3885 flow [2024-06-28 02:51:51,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:51:51,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:51:51,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-28 02:51:51,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3841642228739003 [2024-06-28 02:51:51,925 INFO L175 Difference]: Start difference. First operand has 319 places, 292 transitions, 3231 flow. Second operand 11 states and 131 transitions. [2024-06-28 02:51:51,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 308 transitions, 3885 flow [2024-06-28 02:51:52,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 308 transitions, 3726 flow, removed 33 selfloop flow, removed 9 redundant places. [2024-06-28 02:51:52,443 INFO L231 Difference]: Finished difference. Result has 321 places, 292 transitions, 3156 flow [2024-06-28 02:51:52,443 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3072, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3156, PETRI_PLACES=321, PETRI_TRANSITIONS=292} [2024-06-28 02:51:52,444 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 291 predicate places. [2024-06-28 02:51:52,444 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 292 transitions, 3156 flow [2024-06-28 02:51:52,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:52,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:52,444 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:51:52,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-28 02:51:52,444 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:51:52,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:52,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1040130987, now seen corresponding path program 18 times [2024-06-28 02:51:52,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:52,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038660606] [2024-06-28 02:51:52,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:52,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:52,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:54,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:54,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:54,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038660606] [2024-06-28 02:51:54,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038660606] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:54,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:54,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:51:54,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110286515] [2024-06-28 02:51:54,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:54,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:51:54,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:54,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:51:54,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:51:54,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:51:54,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 292 transitions, 3156 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:54,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:54,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:51:54,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:54,861 INFO L124 PetriNetUnfolderBase]: 772/1357 cut-off events. [2024-06-28 02:51:54,861 INFO L125 PetriNetUnfolderBase]: For 165189/165189 co-relation queries the response was YES. [2024-06-28 02:51:54,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9662 conditions, 1357 events. 772/1357 cut-off events. For 165189/165189 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 7293 event pairs, 77 based on Foata normal form. 2/1357 useless extension candidates. Maximal degree in co-relation 9517. Up to 1191 conditions per place. [2024-06-28 02:51:54,876 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 256 selfloop transitions, 53 changer transitions 0/311 dead transitions. [2024-06-28 02:51:54,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 311 transitions, 3830 flow [2024-06-28 02:51:54,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:51:54,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:51:54,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-28 02:51:54,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4046920821114369 [2024-06-28 02:51:54,877 INFO L175 Difference]: Start difference. First operand has 321 places, 292 transitions, 3156 flow. Second operand 11 states and 138 transitions. [2024-06-28 02:51:54,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 311 transitions, 3830 flow [2024-06-28 02:51:55,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 311 transitions, 3704 flow, removed 19 selfloop flow, removed 10 redundant places. [2024-06-28 02:51:55,448 INFO L231 Difference]: Finished difference. Result has 322 places, 292 transitions, 3141 flow [2024-06-28 02:51:55,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3030, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3141, PETRI_PLACES=322, PETRI_TRANSITIONS=292} [2024-06-28 02:51:55,448 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 292 predicate places. [2024-06-28 02:51:55,448 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 292 transitions, 3141 flow [2024-06-28 02:51:55,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:55,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:55,449 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:51:55,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-28 02:51:55,449 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:51:55,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:55,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1815702715, now seen corresponding path program 19 times [2024-06-28 02:51:55,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:55,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200258035] [2024-06-28 02:51:55,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:55,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:55,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:56,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:56,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:56,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200258035] [2024-06-28 02:51:56,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200258035] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:56,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:56,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:51:56,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972888646] [2024-06-28 02:51:56,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:56,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:51:56,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:56,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:51:56,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:51:56,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:51:56,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 292 transitions, 3141 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:56,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:56,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:51:56,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:57,427 INFO L124 PetriNetUnfolderBase]: 778/1367 cut-off events. [2024-06-28 02:51:57,428 INFO L125 PetriNetUnfolderBase]: For 168092/168092 co-relation queries the response was YES. [2024-06-28 02:51:57,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9759 conditions, 1367 events. 778/1367 cut-off events. For 168092/168092 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 7340 event pairs, 94 based on Foata normal form. 2/1367 useless extension candidates. Maximal degree in co-relation 9613. Up to 1293 conditions per place. [2024-06-28 02:51:57,442 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 282 selfloop transitions, 25 changer transitions 0/309 dead transitions. [2024-06-28 02:51:57,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 309 transitions, 3851 flow [2024-06-28 02:51:57,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:51:57,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:51:57,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-28 02:51:57,443 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35777126099706746 [2024-06-28 02:51:57,443 INFO L175 Difference]: Start difference. First operand has 322 places, 292 transitions, 3141 flow. Second operand 11 states and 122 transitions. [2024-06-28 02:51:57,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 309 transitions, 3851 flow [2024-06-28 02:51:57,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 309 transitions, 3676 flow, removed 10 selfloop flow, removed 11 redundant places. [2024-06-28 02:51:57,960 INFO L231 Difference]: Finished difference. Result has 322 places, 294 transitions, 3079 flow [2024-06-28 02:51:57,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2966, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3079, PETRI_PLACES=322, PETRI_TRANSITIONS=294} [2024-06-28 02:51:57,960 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 292 predicate places. [2024-06-28 02:51:57,961 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 294 transitions, 3079 flow [2024-06-28 02:51:57,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:57,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:51:57,961 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:51:57,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-28 02:51:57,961 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:51:57,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:51:57,961 INFO L85 PathProgramCache]: Analyzing trace with hash 807454433, now seen corresponding path program 6 times [2024-06-28 02:51:57,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:51:57,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650679319] [2024-06-28 02:51:57,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:51:57,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:51:57,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:51:59,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:51:59,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:51:59,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650679319] [2024-06-28 02:51:59,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650679319] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:51:59,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:51:59,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:51:59,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630361669] [2024-06-28 02:51:59,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:51:59,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:51:59,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:51:59,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:51:59,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:51:59,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:51:59,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 294 transitions, 3079 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:51:59,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:51:59,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:51:59,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:51:59,901 INFO L124 PetriNetUnfolderBase]: 782/1375 cut-off events. [2024-06-28 02:51:59,901 INFO L125 PetriNetUnfolderBase]: For 170784/170784 co-relation queries the response was YES. [2024-06-28 02:51:59,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9676 conditions, 1375 events. 782/1375 cut-off events. For 170784/170784 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 7393 event pairs, 102 based on Foata normal form. 2/1375 useless extension candidates. Maximal degree in co-relation 9530. Up to 1329 conditions per place. [2024-06-28 02:51:59,919 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 287 selfloop transitions, 18 changer transitions 0/307 dead transitions. [2024-06-28 02:51:59,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 307 transitions, 3733 flow [2024-06-28 02:51:59,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:51:59,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:51:59,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-28 02:51:59,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34516129032258064 [2024-06-28 02:51:59,920 INFO L175 Difference]: Start difference. First operand has 322 places, 294 transitions, 3079 flow. Second operand 10 states and 107 transitions. [2024-06-28 02:51:59,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 307 transitions, 3733 flow [2024-06-28 02:52:00,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 307 transitions, 3627 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-28 02:52:00,496 INFO L231 Difference]: Finished difference. Result has 323 places, 295 transitions, 3031 flow [2024-06-28 02:52:00,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2973, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3031, PETRI_PLACES=323, PETRI_TRANSITIONS=295} [2024-06-28 02:52:00,496 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 293 predicate places. [2024-06-28 02:52:00,496 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 295 transitions, 3031 flow [2024-06-28 02:52:00,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:00,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:00,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:52:00,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-28 02:52:00,497 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:52:00,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:00,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1825996073, now seen corresponding path program 7 times [2024-06-28 02:52:00,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:00,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069073983] [2024-06-28 02:52:00,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:00,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:00,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:01,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:52:01,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:01,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069073983] [2024-06-28 02:52:01,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069073983] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:01,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:01,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 02:52:01,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48675718] [2024-06-28 02:52:01,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:01,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 02:52:01,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:01,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 02:52:01,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 02:52:01,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:52:01,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 295 transitions, 3031 flow. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:01,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:01,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:52:01,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:02,290 INFO L124 PetriNetUnfolderBase]: 786/1383 cut-off events. [2024-06-28 02:52:02,290 INFO L125 PetriNetUnfolderBase]: For 173584/173584 co-relation queries the response was YES. [2024-06-28 02:52:02,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9667 conditions, 1383 events. 786/1383 cut-off events. For 173584/173584 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 7461 event pairs, 100 based on Foata normal form. 2/1383 useless extension candidates. Maximal degree in co-relation 9520. Up to 1336 conditions per place. [2024-06-28 02:52:02,303 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 289 selfloop transitions, 18 changer transitions 0/309 dead transitions. [2024-06-28 02:52:02,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 309 transitions, 3697 flow [2024-06-28 02:52:02,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:52:02,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:52:02,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-28 02:52:02,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 02:52:02,304 INFO L175 Difference]: Start difference. First operand has 323 places, 295 transitions, 3031 flow. Second operand 10 states and 110 transitions. [2024-06-28 02:52:02,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 309 transitions, 3697 flow [2024-06-28 02:52:02,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 309 transitions, 3649 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-28 02:52:02,879 INFO L231 Difference]: Finished difference. Result has 325 places, 296 transitions, 3043 flow [2024-06-28 02:52:02,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2983, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3043, PETRI_PLACES=325, PETRI_TRANSITIONS=296} [2024-06-28 02:52:02,879 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 295 predicate places. [2024-06-28 02:52:02,879 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 296 transitions, 3043 flow [2024-06-28 02:52:02,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 11 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:02,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:02,879 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:52:02,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-28 02:52:02,880 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:52:02,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:02,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1334856503, now seen corresponding path program 8 times [2024-06-28 02:52:02,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:02,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698349984] [2024-06-28 02:52:02,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:02,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:02,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:04,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:52:04,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:04,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698349984] [2024-06-28 02:52:04,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698349984] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:04,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:04,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:52:04,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930112822] [2024-06-28 02:52:04,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:04,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:52:04,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:04,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:52:04,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:52:04,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:52:04,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 296 transitions, 3043 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:04,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:04,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:52:04,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:04,996 INFO L124 PetriNetUnfolderBase]: 790/1391 cut-off events. [2024-06-28 02:52:04,996 INFO L125 PetriNetUnfolderBase]: For 176893/176893 co-relation queries the response was YES. [2024-06-28 02:52:05,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9736 conditions, 1391 events. 790/1391 cut-off events. For 176893/176893 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 7548 event pairs, 92 based on Foata normal form. 2/1391 useless extension candidates. Maximal degree in co-relation 9588. Up to 1303 conditions per place. [2024-06-28 02:52:05,012 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 278 selfloop transitions, 30 changer transitions 0/310 dead transitions. [2024-06-28 02:52:05,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 310 transitions, 3713 flow [2024-06-28 02:52:05,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:52:05,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:52:05,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-28 02:52:05,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36451612903225805 [2024-06-28 02:52:05,013 INFO L175 Difference]: Start difference. First operand has 325 places, 296 transitions, 3043 flow. Second operand 10 states and 113 transitions. [2024-06-28 02:52:05,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 310 transitions, 3713 flow [2024-06-28 02:52:05,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 310 transitions, 3663 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-28 02:52:05,623 INFO L231 Difference]: Finished difference. Result has 327 places, 297 transitions, 3079 flow [2024-06-28 02:52:05,624 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2993, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3079, PETRI_PLACES=327, PETRI_TRANSITIONS=297} [2024-06-28 02:52:05,624 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 297 predicate places. [2024-06-28 02:52:05,624 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 297 transitions, 3079 flow [2024-06-28 02:52:05,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:05,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:05,624 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:52:05,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-28 02:52:05,624 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:52:05,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:05,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1335071984, now seen corresponding path program 14 times [2024-06-28 02:52:05,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:05,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498930105] [2024-06-28 02:52:05,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:05,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:05,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:07,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:52:07,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:07,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498930105] [2024-06-28 02:52:07,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498930105] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:07,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:07,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:52:07,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944946440] [2024-06-28 02:52:07,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:07,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:52:07,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:07,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:52:07,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:52:07,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:52:07,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 297 transitions, 3079 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:07,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:07,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:52:07,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:08,048 INFO L124 PetriNetUnfolderBase]: 794/1399 cut-off events. [2024-06-28 02:52:08,048 INFO L125 PetriNetUnfolderBase]: For 180360/180360 co-relation queries the response was YES. [2024-06-28 02:52:08,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9853 conditions, 1399 events. 794/1399 cut-off events. For 180360/180360 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 7608 event pairs, 88 based on Foata normal form. 2/1399 useless extension candidates. Maximal degree in co-relation 9704. Up to 1270 conditions per place. [2024-06-28 02:52:08,063 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 269 selfloop transitions, 43 changer transitions 0/314 dead transitions. [2024-06-28 02:52:08,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 314 transitions, 3790 flow [2024-06-28 02:52:08,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:52:08,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:52:08,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-28 02:52:08,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-28 02:52:08,064 INFO L175 Difference]: Start difference. First operand has 327 places, 297 transitions, 3079 flow. Second operand 11 states and 124 transitions. [2024-06-28 02:52:08,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 314 transitions, 3790 flow [2024-06-28 02:52:08,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 314 transitions, 3714 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-28 02:52:08,603 INFO L231 Difference]: Finished difference. Result has 331 places, 300 transitions, 3168 flow [2024-06-28 02:52:08,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3003, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3168, PETRI_PLACES=331, PETRI_TRANSITIONS=300} [2024-06-28 02:52:08,603 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 301 predicate places. [2024-06-28 02:52:08,603 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 300 transitions, 3168 flow [2024-06-28 02:52:08,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:08,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:08,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:52:08,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-28 02:52:08,603 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:52:08,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:08,604 INFO L85 PathProgramCache]: Analyzing trace with hash 550346455, now seen corresponding path program 9 times [2024-06-28 02:52:08,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:08,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633392993] [2024-06-28 02:52:08,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:08,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:08,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:09,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:52:09,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:09,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633392993] [2024-06-28 02:52:09,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633392993] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:09,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:09,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:52:09,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189240850] [2024-06-28 02:52:09,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:09,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:52:09,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:09,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:52:09,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:52:09,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:52:09,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 300 transitions, 3168 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:09,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:09,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:52:09,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:10,462 INFO L124 PetriNetUnfolderBase]: 798/1407 cut-off events. [2024-06-28 02:52:10,462 INFO L125 PetriNetUnfolderBase]: For 183680/183680 co-relation queries the response was YES. [2024-06-28 02:52:10,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9981 conditions, 1407 events. 798/1407 cut-off events. For 183680/183680 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 7658 event pairs, 104 based on Foata normal form. 2/1407 useless extension candidates. Maximal degree in co-relation 9830. Up to 1369 conditions per place. [2024-06-28 02:52:10,477 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 296 selfloop transitions, 16 changer transitions 0/314 dead transitions. [2024-06-28 02:52:10,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 314 transitions, 3855 flow [2024-06-28 02:52:10,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:52:10,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:52:10,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-28 02:52:10,478 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34516129032258064 [2024-06-28 02:52:10,478 INFO L175 Difference]: Start difference. First operand has 331 places, 300 transitions, 3168 flow. Second operand 10 states and 107 transitions. [2024-06-28 02:52:10,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 314 transitions, 3855 flow [2024-06-28 02:52:11,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 314 transitions, 3762 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-28 02:52:11,035 INFO L231 Difference]: Finished difference. Result has 335 places, 302 transitions, 3151 flow [2024-06-28 02:52:11,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3075, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3151, PETRI_PLACES=335, PETRI_TRANSITIONS=302} [2024-06-28 02:52:11,035 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 305 predicate places. [2024-06-28 02:52:11,035 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 302 transitions, 3151 flow [2024-06-28 02:52:11,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:11,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:11,036 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:52:11,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-28 02:52:11,036 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:52:11,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:11,036 INFO L85 PathProgramCache]: Analyzing trace with hash 550355755, now seen corresponding path program 10 times [2024-06-28 02:52:11,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:11,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570642701] [2024-06-28 02:52:11,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:11,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:11,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:12,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:52:12,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:12,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570642701] [2024-06-28 02:52:12,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570642701] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:12,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:12,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:52:12,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606796207] [2024-06-28 02:52:12,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:12,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:52:12,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:12,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:52:12,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:52:12,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:52:12,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 302 transitions, 3151 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:12,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:12,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:52:12,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:13,119 INFO L124 PetriNetUnfolderBase]: 802/1415 cut-off events. [2024-06-28 02:52:13,119 INFO L125 PetriNetUnfolderBase]: For 186634/186634 co-relation queries the response was YES. [2024-06-28 02:52:13,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9981 conditions, 1415 events. 802/1415 cut-off events. For 186634/186634 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 7724 event pairs, 102 based on Foata normal form. 2/1415 useless extension candidates. Maximal degree in co-relation 9828. Up to 1368 conditions per place. [2024-06-28 02:52:13,135 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 296 selfloop transitions, 18 changer transitions 0/316 dead transitions. [2024-06-28 02:52:13,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 316 transitions, 3835 flow [2024-06-28 02:52:13,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:52:13,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:52:13,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-28 02:52:13,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-28 02:52:13,136 INFO L175 Difference]: Start difference. First operand has 335 places, 302 transitions, 3151 flow. Second operand 10 states and 109 transitions. [2024-06-28 02:52:13,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 316 transitions, 3835 flow [2024-06-28 02:52:13,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 316 transitions, 3788 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-28 02:52:13,709 INFO L231 Difference]: Finished difference. Result has 338 places, 303 transitions, 3170 flow [2024-06-28 02:52:13,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3104, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3170, PETRI_PLACES=338, PETRI_TRANSITIONS=303} [2024-06-28 02:52:13,709 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 308 predicate places. [2024-06-28 02:52:13,710 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 303 transitions, 3170 flow [2024-06-28 02:52:13,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:13,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:13,710 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:52:13,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-28 02:52:13,710 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:52:13,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:13,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1340434364, now seen corresponding path program 15 times [2024-06-28 02:52:13,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:13,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708751541] [2024-06-28 02:52:13,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:13,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:13,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:15,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:52:15,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:15,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708751541] [2024-06-28 02:52:15,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708751541] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:15,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:15,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:52:15,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266371783] [2024-06-28 02:52:15,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:15,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:52:15,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:15,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:52:15,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:52:15,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:52:15,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 303 transitions, 3170 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:15,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:15,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:52:15,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:16,475 INFO L124 PetriNetUnfolderBase]: 809/1428 cut-off events. [2024-06-28 02:52:16,475 INFO L125 PetriNetUnfolderBase]: For 190114/190114 co-relation queries the response was YES. [2024-06-28 02:52:16,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10096 conditions, 1428 events. 809/1428 cut-off events. For 190114/190114 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 7838 event pairs, 92 based on Foata normal form. 2/1428 useless extension candidates. Maximal degree in co-relation 9942. Up to 1299 conditions per place. [2024-06-28 02:52:16,490 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 272 selfloop transitions, 47 changer transitions 0/321 dead transitions. [2024-06-28 02:52:16,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 321 transitions, 3903 flow [2024-06-28 02:52:16,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:52:16,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:52:16,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-28 02:52:16,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36656891495601174 [2024-06-28 02:52:16,491 INFO L175 Difference]: Start difference. First operand has 338 places, 303 transitions, 3170 flow. Second operand 11 states and 125 transitions. [2024-06-28 02:52:16,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 321 transitions, 3903 flow [2024-06-28 02:52:17,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 321 transitions, 3842 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-28 02:52:17,069 INFO L231 Difference]: Finished difference. Result has 343 places, 307 transitions, 3295 flow [2024-06-28 02:52:17,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3109, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3295, PETRI_PLACES=343, PETRI_TRANSITIONS=307} [2024-06-28 02:52:17,070 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 313 predicate places. [2024-06-28 02:52:17,070 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 307 transitions, 3295 flow [2024-06-28 02:52:17,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:17,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:17,070 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:52:17,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-28 02:52:17,070 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:52:17,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:17,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1340428629, now seen corresponding path program 20 times [2024-06-28 02:52:17,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:17,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170189731] [2024-06-28 02:52:17,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:17,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:17,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:18,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:52:18,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:18,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170189731] [2024-06-28 02:52:18,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170189731] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:18,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:18,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:52:18,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279727161] [2024-06-28 02:52:18,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:18,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:52:18,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:18,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:52:18,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:52:18,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:52:18,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 307 transitions, 3295 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:18,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:18,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:52:18,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:19,168 INFO L124 PetriNetUnfolderBase]: 805/1422 cut-off events. [2024-06-28 02:52:19,168 INFO L125 PetriNetUnfolderBase]: For 180057/180057 co-relation queries the response was YES. [2024-06-28 02:52:19,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9931 conditions, 1422 events. 805/1422 cut-off events. For 180057/180057 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 7771 event pairs, 75 based on Foata normal form. 2/1422 useless extension candidates. Maximal degree in co-relation 9774. Up to 1108 conditions per place. [2024-06-28 02:52:19,186 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 244 selfloop transitions, 77 changer transitions 0/323 dead transitions. [2024-06-28 02:52:19,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 323 transitions, 4213 flow [2024-06-28 02:52:19,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:52:19,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:52:19,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-28 02:52:19,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3841642228739003 [2024-06-28 02:52:19,187 INFO L175 Difference]: Start difference. First operand has 343 places, 307 transitions, 3295 flow. Second operand 11 states and 131 transitions. [2024-06-28 02:52:19,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 323 transitions, 4213 flow [2024-06-28 02:52:19,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 323 transitions, 4093 flow, removed 32 selfloop flow, removed 6 redundant places. [2024-06-28 02:52:19,866 INFO L231 Difference]: Finished difference. Result has 348 places, 307 transitions, 3334 flow [2024-06-28 02:52:19,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3175, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3334, PETRI_PLACES=348, PETRI_TRANSITIONS=307} [2024-06-28 02:52:19,866 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 318 predicate places. [2024-06-28 02:52:19,867 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 307 transitions, 3334 flow [2024-06-28 02:52:19,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:19,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:19,867 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:52:19,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-28 02:52:19,867 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:52:19,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:19,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1826211554, now seen corresponding path program 16 times [2024-06-28 02:52:19,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:19,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939840655] [2024-06-28 02:52:19,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:19,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:19,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:21,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:52:21,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:21,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939840655] [2024-06-28 02:52:21,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939840655] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:21,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:21,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:52:21,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558568873] [2024-06-28 02:52:21,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:21,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:52:21,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:21,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:52:21,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:52:21,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:52:21,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 307 transitions, 3334 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:21,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:21,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:52:21,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:21,727 INFO L124 PetriNetUnfolderBase]: 825/1466 cut-off events. [2024-06-28 02:52:21,727 INFO L125 PetriNetUnfolderBase]: For 251470/251470 co-relation queries the response was YES. [2024-06-28 02:52:21,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10238 conditions, 1466 events. 825/1466 cut-off events. For 251470/251470 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 8076 event pairs, 105 based on Foata normal form. 12/1476 useless extension candidates. Maximal degree in co-relation 10080. Up to 1361 conditions per place. [2024-06-28 02:52:21,742 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 297 selfloop transitions, 22 changer transitions 6/327 dead transitions. [2024-06-28 02:52:21,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 327 transitions, 4118 flow [2024-06-28 02:52:21,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:52:21,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:52:21,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-28 02:52:21,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36950146627565983 [2024-06-28 02:52:21,743 INFO L175 Difference]: Start difference. First operand has 348 places, 307 transitions, 3334 flow. Second operand 11 states and 126 transitions. [2024-06-28 02:52:21,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 327 transitions, 4118 flow [2024-06-28 02:52:22,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 327 transitions, 3903 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 02:52:22,372 INFO L231 Difference]: Finished difference. Result has 349 places, 307 transitions, 3193 flow [2024-06-28 02:52:22,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3119, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3193, PETRI_PLACES=349, PETRI_TRANSITIONS=307} [2024-06-28 02:52:22,372 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 319 predicate places. [2024-06-28 02:52:22,372 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 307 transitions, 3193 flow [2024-06-28 02:52:22,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:22,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:22,373 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:52:22,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-28 02:52:22,373 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:52:22,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:22,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1700809131, now seen corresponding path program 11 times [2024-06-28 02:52:22,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:22,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391735478] [2024-06-28 02:52:22,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:22,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:22,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:23,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:52:23,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:23,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391735478] [2024-06-28 02:52:23,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391735478] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:23,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:23,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:52:23,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169271612] [2024-06-28 02:52:23,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:23,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:52:23,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:23,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:52:23,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:52:23,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:52:23,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 307 transitions, 3193 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:23,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:23,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:52:23,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:24,169 INFO L124 PetriNetUnfolderBase]: 823/1464 cut-off events. [2024-06-28 02:52:24,169 INFO L125 PetriNetUnfolderBase]: For 186348/186348 co-relation queries the response was YES. [2024-06-28 02:52:24,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10077 conditions, 1464 events. 823/1464 cut-off events. For 186348/186348 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 8098 event pairs, 111 based on Foata normal form. 2/1464 useless extension candidates. Maximal degree in co-relation 9918. Up to 1415 conditions per place. [2024-06-28 02:52:24,185 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 297 selfloop transitions, 21 changer transitions 0/320 dead transitions. [2024-06-28 02:52:24,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 320 transitions, 3885 flow [2024-06-28 02:52:24,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:52:24,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:52:24,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-28 02:52:24,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-28 02:52:24,186 INFO L175 Difference]: Start difference. First operand has 349 places, 307 transitions, 3193 flow. Second operand 10 states and 108 transitions. [2024-06-28 02:52:24,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 320 transitions, 3885 flow [2024-06-28 02:52:24,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 320 transitions, 3813 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-28 02:52:24,766 INFO L231 Difference]: Finished difference. Result has 350 places, 308 transitions, 3196 flow [2024-06-28 02:52:24,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3121, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3196, PETRI_PLACES=350, PETRI_TRANSITIONS=308} [2024-06-28 02:52:24,767 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 320 predicate places. [2024-06-28 02:52:24,767 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 308 transitions, 3196 flow [2024-06-28 02:52:24,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:24,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:24,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:52:24,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-28 02:52:24,767 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:52:24,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:24,767 INFO L85 PathProgramCache]: Analyzing trace with hash 585455564, now seen corresponding path program 17 times [2024-06-28 02:52:24,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:24,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955405221] [2024-06-28 02:52:24,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:24,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:24,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:26,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:52:26,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:26,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955405221] [2024-06-28 02:52:26,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955405221] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:26,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:26,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:52:26,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908490451] [2024-06-28 02:52:26,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:26,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:52:26,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:26,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:52:26,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:52:26,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:52:26,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 308 transitions, 3196 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:26,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:26,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:52:26,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:26,870 INFO L124 PetriNetUnfolderBase]: 827/1472 cut-off events. [2024-06-28 02:52:26,870 INFO L125 PetriNetUnfolderBase]: For 189330/189330 co-relation queries the response was YES. [2024-06-28 02:52:26,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10136 conditions, 1472 events. 827/1472 cut-off events. For 189330/189330 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 8160 event pairs, 103 based on Foata normal form. 2/1472 useless extension candidates. Maximal degree in co-relation 9976. Up to 1337 conditions per place. [2024-06-28 02:52:26,887 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 272 selfloop transitions, 50 changer transitions 0/324 dead transitions. [2024-06-28 02:52:26,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 324 transitions, 3918 flow [2024-06-28 02:52:26,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:52:26,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:52:26,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-28 02:52:26,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3724340175953079 [2024-06-28 02:52:26,888 INFO L175 Difference]: Start difference. First operand has 350 places, 308 transitions, 3196 flow. Second operand 11 states and 127 transitions. [2024-06-28 02:52:26,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 324 transitions, 3918 flow [2024-06-28 02:52:27,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 324 transitions, 3855 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-28 02:52:27,558 INFO L231 Difference]: Finished difference. Result has 353 places, 309 transitions, 3277 flow [2024-06-28 02:52:27,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3133, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3277, PETRI_PLACES=353, PETRI_TRANSITIONS=309} [2024-06-28 02:52:27,558 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 323 predicate places. [2024-06-28 02:52:27,558 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 309 transitions, 3277 flow [2024-06-28 02:52:27,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:27,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:27,560 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:52:27,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-28 02:52:27,560 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:52:27,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:27,561 INFO L85 PathProgramCache]: Analyzing trace with hash 585451844, now seen corresponding path program 18 times [2024-06-28 02:52:27,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:27,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532572876] [2024-06-28 02:52:27,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:27,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:27,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:29,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:52:29,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:29,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532572876] [2024-06-28 02:52:29,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532572876] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:29,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:29,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:52:29,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600487647] [2024-06-28 02:52:29,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:29,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:52:29,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:29,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:52:29,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:52:29,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:52:29,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 309 transitions, 3277 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:29,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:29,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:52:29,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:29,843 INFO L124 PetriNetUnfolderBase]: 860/1539 cut-off events. [2024-06-28 02:52:29,843 INFO L125 PetriNetUnfolderBase]: For 264291/264291 co-relation queries the response was YES. [2024-06-28 02:52:29,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11767 conditions, 1539 events. 860/1539 cut-off events. For 264291/264291 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 8550 event pairs, 114 based on Foata normal form. 2/1539 useless extension candidates. Maximal degree in co-relation 11606. Up to 1266 conditions per place. [2024-06-28 02:52:29,861 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 274 selfloop transitions, 55 changer transitions 0/331 dead transitions. [2024-06-28 02:52:29,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 331 transitions, 4317 flow [2024-06-28 02:52:29,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:52:29,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:52:29,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-28 02:52:29,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39002932551319647 [2024-06-28 02:52:29,863 INFO L175 Difference]: Start difference. First operand has 353 places, 309 transitions, 3277 flow. Second operand 11 states and 133 transitions. [2024-06-28 02:52:29,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 331 transitions, 4317 flow [2024-06-28 02:52:30,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 331 transitions, 4157 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-28 02:52:30,669 INFO L231 Difference]: Finished difference. Result has 355 places, 310 transitions, 3271 flow [2024-06-28 02:52:30,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3117, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3271, PETRI_PLACES=355, PETRI_TRANSITIONS=310} [2024-06-28 02:52:30,670 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 325 predicate places. [2024-06-28 02:52:30,670 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 310 transitions, 3271 flow [2024-06-28 02:52:30,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:30,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:30,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:52:30,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-28 02:52:30,671 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:52:30,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:30,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1435103915, now seen corresponding path program 21 times [2024-06-28 02:52:30,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:30,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105564103] [2024-06-28 02:52:30,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:30,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:30,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:32,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:52:32,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:32,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105564103] [2024-06-28 02:52:32,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105564103] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:32,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:32,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:52:32,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572217275] [2024-06-28 02:52:32,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:32,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:52:32,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:32,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:52:32,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:52:32,448 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:52:32,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 310 transitions, 3271 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:32,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:32,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:52:32,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:33,214 INFO L124 PetriNetUnfolderBase]: 856/1533 cut-off events. [2024-06-28 02:52:33,214 INFO L125 PetriNetUnfolderBase]: For 253168/253168 co-relation queries the response was YES. [2024-06-28 02:52:33,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11451 conditions, 1533 events. 856/1533 cut-off events. For 253168/253168 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 8553 event pairs, 117 based on Foata normal form. 2/1533 useless extension candidates. Maximal degree in co-relation 11290. Up to 1401 conditions per place. [2024-06-28 02:52:33,234 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 286 selfloop transitions, 37 changer transitions 0/325 dead transitions. [2024-06-28 02:52:33,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 325 transitions, 3959 flow [2024-06-28 02:52:33,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:52:33,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:52:33,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-28 02:52:33,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36950146627565983 [2024-06-28 02:52:33,235 INFO L175 Difference]: Start difference. First operand has 355 places, 310 transitions, 3271 flow. Second operand 11 states and 126 transitions. [2024-06-28 02:52:33,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 325 transitions, 3959 flow [2024-06-28 02:52:34,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 325 transitions, 3701 flow, removed 40 selfloop flow, removed 11 redundant places. [2024-06-28 02:52:34,060 INFO L231 Difference]: Finished difference. Result has 355 places, 310 transitions, 3092 flow [2024-06-28 02:52:34,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3013, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3092, PETRI_PLACES=355, PETRI_TRANSITIONS=310} [2024-06-28 02:52:34,060 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 325 predicate places. [2024-06-28 02:52:34,060 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 310 transitions, 3092 flow [2024-06-28 02:52:34,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:34,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:34,061 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:52:34,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-28 02:52:34,061 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:52:34,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:34,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1123258253, now seen corresponding path program 12 times [2024-06-28 02:52:34,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:34,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353537269] [2024-06-28 02:52:34,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:34,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:34,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:35,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:52:35,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:35,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353537269] [2024-06-28 02:52:35,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353537269] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:35,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:35,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:52:35,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685423764] [2024-06-28 02:52:35,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:35,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:52:35,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:35,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:52:35,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:52:35,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:52:35,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 310 transitions, 3092 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:35,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:35,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:52:35,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:35,721 INFO L124 PetriNetUnfolderBase]: 860/1541 cut-off events. [2024-06-28 02:52:35,721 INFO L125 PetriNetUnfolderBase]: For 256256/256256 co-relation queries the response was YES. [2024-06-28 02:52:35,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11198 conditions, 1541 events. 860/1541 cut-off events. For 256256/256256 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 8609 event pairs, 133 based on Foata normal form. 2/1541 useless extension candidates. Maximal degree in co-relation 11039. Up to 1498 conditions per place. [2024-06-28 02:52:35,739 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 306 selfloop transitions, 15 changer transitions 0/323 dead transitions. [2024-06-28 02:52:35,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 323 transitions, 3788 flow [2024-06-28 02:52:35,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:52:35,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:52:35,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-28 02:52:35,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-28 02:52:35,740 INFO L175 Difference]: Start difference. First operand has 355 places, 310 transitions, 3092 flow. Second operand 10 states and 105 transitions. [2024-06-28 02:52:35,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 323 transitions, 3788 flow [2024-06-28 02:52:36,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 323 transitions, 3649 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-28 02:52:36,524 INFO L231 Difference]: Finished difference. Result has 354 places, 311 transitions, 3017 flow [2024-06-28 02:52:36,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2953, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3017, PETRI_PLACES=354, PETRI_TRANSITIONS=311} [2024-06-28 02:52:36,524 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 324 predicate places. [2024-06-28 02:52:36,524 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 311 transitions, 3017 flow [2024-06-28 02:52:36,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:36,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:36,525 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:52:36,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-28 02:52:36,525 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:52:36,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:36,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1334864439, now seen corresponding path program 22 times [2024-06-28 02:52:36,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:36,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694047277] [2024-06-28 02:52:36,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:36,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:36,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:38,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:52:38,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:38,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694047277] [2024-06-28 02:52:38,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694047277] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:38,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:38,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:52:38,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806569740] [2024-06-28 02:52:38,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:38,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:52:38,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:38,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:52:38,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:52:38,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:52:38,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 311 transitions, 3017 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:38,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:38,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:52:38,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:38,907 INFO L124 PetriNetUnfolderBase]: 866/1551 cut-off events. [2024-06-28 02:52:38,907 INFO L125 PetriNetUnfolderBase]: For 261035/261035 co-relation queries the response was YES. [2024-06-28 02:52:38,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11145 conditions, 1551 events. 866/1551 cut-off events. For 261035/261035 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 8717 event pairs, 113 based on Foata normal form. 2/1551 useless extension candidates. Maximal degree in co-relation 10986. Up to 1382 conditions per place. [2024-06-28 02:52:38,926 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 277 selfloop transitions, 49 changer transitions 0/328 dead transitions. [2024-06-28 02:52:38,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 328 transitions, 3761 flow [2024-06-28 02:52:38,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:52:38,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:52:38,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-28 02:52:38,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3724340175953079 [2024-06-28 02:52:38,927 INFO L175 Difference]: Start difference. First operand has 354 places, 311 transitions, 3017 flow. Second operand 11 states and 127 transitions. [2024-06-28 02:52:38,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 328 transitions, 3761 flow [2024-06-28 02:52:39,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 328 transitions, 3707 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-28 02:52:39,717 INFO L231 Difference]: Finished difference. Result has 357 places, 313 transitions, 3120 flow [2024-06-28 02:52:39,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2963, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3120, PETRI_PLACES=357, PETRI_TRANSITIONS=313} [2024-06-28 02:52:39,718 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 327 predicate places. [2024-06-28 02:52:39,718 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 313 transitions, 3120 flow [2024-06-28 02:52:39,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:39,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:39,719 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:52:39,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-28 02:52:39,719 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:52:39,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:39,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1335066249, now seen corresponding path program 23 times [2024-06-28 02:52:39,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:39,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785594024] [2024-06-28 02:52:39,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:39,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:39,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:41,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:52:41,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:41,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785594024] [2024-06-28 02:52:41,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785594024] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:41,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:41,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:52:41,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321347105] [2024-06-28 02:52:41,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:41,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:52:41,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:41,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:52:41,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:52:41,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:52:41,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 313 transitions, 3120 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:41,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:41,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:52:41,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:41,833 INFO L124 PetriNetUnfolderBase]: 862/1545 cut-off events. [2024-06-28 02:52:41,833 INFO L125 PetriNetUnfolderBase]: For 249568/249568 co-relation queries the response was YES. [2024-06-28 02:52:41,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10938 conditions, 1545 events. 862/1545 cut-off events. For 249568/249568 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 8652 event pairs, 110 based on Foata normal form. 2/1545 useless extension candidates. Maximal degree in co-relation 10778. Up to 1233 conditions per place. [2024-06-28 02:52:41,849 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 257 selfloop transitions, 71 changer transitions 0/330 dead transitions. [2024-06-28 02:52:41,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 330 transitions, 4072 flow [2024-06-28 02:52:41,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:52:41,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:52:41,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-28 02:52:41,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39589442815249265 [2024-06-28 02:52:41,850 INFO L175 Difference]: Start difference. First operand has 357 places, 313 transitions, 3120 flow. Second operand 11 states and 135 transitions. [2024-06-28 02:52:41,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 330 transitions, 4072 flow [2024-06-28 02:52:42,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 330 transitions, 3911 flow, removed 33 selfloop flow, removed 9 redundant places. [2024-06-28 02:52:42,642 INFO L231 Difference]: Finished difference. Result has 359 places, 313 transitions, 3106 flow [2024-06-28 02:52:42,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2959, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3106, PETRI_PLACES=359, PETRI_TRANSITIONS=313} [2024-06-28 02:52:42,643 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 329 predicate places. [2024-06-28 02:52:42,643 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 313 transitions, 3106 flow [2024-06-28 02:52:42,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:42,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:42,643 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:52:42,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-28 02:52:42,643 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:52:42,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:42,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1133507783, now seen corresponding path program 13 times [2024-06-28 02:52:42,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:42,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738907757] [2024-06-28 02:52:42,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:42,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:42,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:43,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:52:43,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:43,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738907757] [2024-06-28 02:52:43,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738907757] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:43,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:43,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:52:43,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115960491] [2024-06-28 02:52:43,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:43,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:52:43,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:43,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:52:43,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:52:44,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:52:44,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 313 transitions, 3106 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:44,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:44,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:52:44,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:44,538 INFO L124 PetriNetUnfolderBase]: 866/1553 cut-off events. [2024-06-28 02:52:44,539 INFO L125 PetriNetUnfolderBase]: For 253472/253472 co-relation queries the response was YES. [2024-06-28 02:52:44,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11003 conditions, 1553 events. 866/1553 cut-off events. For 253472/253472 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 8711 event pairs, 134 based on Foata normal form. 2/1553 useless extension candidates. Maximal degree in co-relation 10842. Up to 1503 conditions per place. [2024-06-28 02:52:44,556 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 306 selfloop transitions, 20 changer transitions 0/328 dead transitions. [2024-06-28 02:52:44,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 328 transitions, 3838 flow [2024-06-28 02:52:44,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:52:44,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:52:44,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-28 02:52:44,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3580645161290323 [2024-06-28 02:52:44,557 INFO L175 Difference]: Start difference. First operand has 359 places, 313 transitions, 3106 flow. Second operand 10 states and 111 transitions. [2024-06-28 02:52:44,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 328 transitions, 3838 flow [2024-06-28 02:52:45,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 328 transitions, 3678 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-28 02:52:45,263 INFO L231 Difference]: Finished difference. Result has 360 places, 315 transitions, 3043 flow [2024-06-28 02:52:45,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2946, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3043, PETRI_PLACES=360, PETRI_TRANSITIONS=315} [2024-06-28 02:52:45,263 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 330 predicate places. [2024-06-28 02:52:45,263 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 315 transitions, 3043 flow [2024-06-28 02:52:45,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:45,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:45,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:52:45,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-28 02:52:45,264 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:52:45,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:45,264 INFO L85 PathProgramCache]: Analyzing trace with hash 792535595, now seen corresponding path program 14 times [2024-06-28 02:52:45,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:45,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693934246] [2024-06-28 02:52:45,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:45,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:45,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:46,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:52:46,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:46,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693934246] [2024-06-28 02:52:46,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693934246] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:46,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:46,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:52:46,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652575489] [2024-06-28 02:52:46,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:46,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:52:46,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:46,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:52:46,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:52:46,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:52:46,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 315 transitions, 3043 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:46,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:46,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:52:46,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:47,146 INFO L124 PetriNetUnfolderBase]: 870/1561 cut-off events. [2024-06-28 02:52:47,146 INFO L125 PetriNetUnfolderBase]: For 257430/257430 co-relation queries the response was YES. [2024-06-28 02:52:47,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10969 conditions, 1561 events. 870/1561 cut-off events. For 257430/257430 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 8789 event pairs, 132 based on Foata normal form. 2/1561 useless extension candidates. Maximal degree in co-relation 10806. Up to 1502 conditions per place. [2024-06-28 02:52:47,163 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 305 selfloop transitions, 22 changer transitions 0/329 dead transitions. [2024-06-28 02:52:47,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 329 transitions, 3761 flow [2024-06-28 02:52:47,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:52:47,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:52:47,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-28 02:52:47,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3580645161290323 [2024-06-28 02:52:47,164 INFO L175 Difference]: Start difference. First operand has 360 places, 315 transitions, 3043 flow. Second operand 10 states and 111 transitions. [2024-06-28 02:52:47,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 329 transitions, 3761 flow [2024-06-28 02:52:47,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 329 transitions, 3698 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-28 02:52:47,966 INFO L231 Difference]: Finished difference. Result has 363 places, 316 transitions, 3062 flow [2024-06-28 02:52:47,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2980, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3062, PETRI_PLACES=363, PETRI_TRANSITIONS=316} [2024-06-28 02:52:47,966 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 333 predicate places. [2024-06-28 02:52:47,966 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 316 transitions, 3062 flow [2024-06-28 02:52:47,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:47,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:47,966 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:52:47,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-28 02:52:47,967 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:52:47,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:47,967 INFO L85 PathProgramCache]: Analyzing trace with hash 785116985, now seen corresponding path program 15 times [2024-06-28 02:52:47,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:47,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675919809] [2024-06-28 02:52:47,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:47,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:47,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:49,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:52:49,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:49,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675919809] [2024-06-28 02:52:49,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675919809] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:49,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:49,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:52:49,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044305053] [2024-06-28 02:52:49,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:49,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:52:49,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:49,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:52:49,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:52:49,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:52:49,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 316 transitions, 3062 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:49,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:49,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:52:49,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:49,958 INFO L124 PetriNetUnfolderBase]: 867/1556 cut-off events. [2024-06-28 02:52:49,958 INFO L125 PetriNetUnfolderBase]: For 245179/245179 co-relation queries the response was YES. [2024-06-28 02:52:49,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10670 conditions, 1556 events. 867/1556 cut-off events. For 245179/245179 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 8779 event pairs, 129 based on Foata normal form. 2/1556 useless extension candidates. Maximal degree in co-relation 10506. Up to 1488 conditions per place. [2024-06-28 02:52:49,985 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 302 selfloop transitions, 26 changer transitions 0/330 dead transitions. [2024-06-28 02:52:49,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 330 transitions, 3756 flow [2024-06-28 02:52:49,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 02:52:49,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 02:52:49,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-28 02:52:49,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-28 02:52:49,986 INFO L175 Difference]: Start difference. First operand has 363 places, 316 transitions, 3062 flow. Second operand 10 states and 115 transitions. [2024-06-28 02:52:49,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 330 transitions, 3756 flow [2024-06-28 02:52:50,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 330 transitions, 3684 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-28 02:52:50,821 INFO L231 Difference]: Finished difference. Result has 365 places, 316 transitions, 3046 flow [2024-06-28 02:52:50,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2990, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3046, PETRI_PLACES=365, PETRI_TRANSITIONS=316} [2024-06-28 02:52:50,821 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 335 predicate places. [2024-06-28 02:52:50,821 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 316 transitions, 3046 flow [2024-06-28 02:52:50,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:50,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:50,821 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:52:50,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-28 02:52:50,822 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:52:50,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:50,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1141126839, now seen corresponding path program 24 times [2024-06-28 02:52:50,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:50,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352998069] [2024-06-28 02:52:50,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:50,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:50,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:52,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:52:52,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:52,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352998069] [2024-06-28 02:52:52,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352998069] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:52,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:52,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:52:52,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915455929] [2024-06-28 02:52:52,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:52,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:52:52,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:52,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:52:52,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:52:52,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:52:52,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 316 transitions, 3046 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:52,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:52,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:52:52,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:53,146 INFO L124 PetriNetUnfolderBase]: 873/1566 cut-off events. [2024-06-28 02:52:53,147 INFO L125 PetriNetUnfolderBase]: For 248986/248986 co-relation queries the response was YES. [2024-06-28 02:52:53,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10749 conditions, 1566 events. 873/1566 cut-off events. For 248986/248986 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 8853 event pairs, 125 based on Foata normal form. 2/1566 useless extension candidates. Maximal degree in co-relation 10584. Up to 1471 conditions per place. [2024-06-28 02:52:53,166 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 299 selfloop transitions, 33 changer transitions 0/334 dead transitions. [2024-06-28 02:52:53,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 334 transitions, 3806 flow [2024-06-28 02:52:53,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:52:53,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:52:53,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-28 02:52:53,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3724340175953079 [2024-06-28 02:52:53,167 INFO L175 Difference]: Start difference. First operand has 365 places, 316 transitions, 3046 flow. Second operand 11 states and 127 transitions. [2024-06-28 02:52:53,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 334 transitions, 3806 flow [2024-06-28 02:52:54,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 334 transitions, 3670 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-28 02:52:54,018 INFO L231 Difference]: Finished difference. Result has 367 places, 318 transitions, 3035 flow [2024-06-28 02:52:54,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2910, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3035, PETRI_PLACES=367, PETRI_TRANSITIONS=318} [2024-06-28 02:52:54,019 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 337 predicate places. [2024-06-28 02:52:54,019 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 318 transitions, 3035 flow [2024-06-28 02:52:54,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:54,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:54,019 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:52:54,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-28 02:52:54,019 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:52:54,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:54,020 INFO L85 PathProgramCache]: Analyzing trace with hash 784901504, now seen corresponding path program 19 times [2024-06-28 02:52:54,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:54,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968194721] [2024-06-28 02:52:54,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:54,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:54,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:55,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:52:55,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:55,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968194721] [2024-06-28 02:52:55,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968194721] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:55,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:55,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:52:55,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132841673] [2024-06-28 02:52:55,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:55,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:52:55,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:55,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:52:55,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:52:55,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:52:55,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 318 transitions, 3035 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:55,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:55,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:52:55,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:56,043 INFO L124 PetriNetUnfolderBase]: 857/1538 cut-off events. [2024-06-28 02:52:56,043 INFO L125 PetriNetUnfolderBase]: For 235470/235470 co-relation queries the response was YES. [2024-06-28 02:52:56,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9009 conditions, 1538 events. 857/1538 cut-off events. For 235470/235470 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 8686 event pairs, 117 based on Foata normal form. 12/1548 useless extension candidates. Maximal degree in co-relation 8843. Up to 1421 conditions per place. [2024-06-28 02:52:56,061 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 304 selfloop transitions, 26 changer transitions 6/338 dead transitions. [2024-06-28 02:52:56,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 338 transitions, 3809 flow [2024-06-28 02:52:56,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:52:56,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:52:56,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-28 02:52:56,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3812316715542522 [2024-06-28 02:52:56,062 INFO L175 Difference]: Start difference. First operand has 367 places, 318 transitions, 3035 flow. Second operand 11 states and 130 transitions. [2024-06-28 02:52:56,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 338 transitions, 3809 flow [2024-06-28 02:52:56,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 338 transitions, 3666 flow, removed 24 selfloop flow, removed 10 redundant places. [2024-06-28 02:52:56,671 INFO L231 Difference]: Finished difference. Result has 368 places, 317 transitions, 2937 flow [2024-06-28 02:52:56,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2894, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2937, PETRI_PLACES=368, PETRI_TRANSITIONS=317} [2024-06-28 02:52:56,672 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 338 predicate places. [2024-06-28 02:52:56,672 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 317 transitions, 2937 flow [2024-06-28 02:52:56,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:56,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:56,673 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:52:56,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-28 02:52:56,673 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:52:56,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:56,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1141132419, now seen corresponding path program 25 times [2024-06-28 02:52:56,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:56,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709163324] [2024-06-28 02:52:56,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:56,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:56,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:52:58,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:52:58,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:52:58,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709163324] [2024-06-28 02:52:58,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709163324] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:52:58,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:52:58,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:52:58,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697439935] [2024-06-28 02:52:58,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:52:58,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:52:58,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:52:58,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:52:58,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:52:58,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:52:58,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 317 transitions, 2937 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:58,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:52:58,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:52:58,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:52:58,735 INFO L124 PetriNetUnfolderBase]: 847/1522 cut-off events. [2024-06-28 02:52:58,735 INFO L125 PetriNetUnfolderBase]: For 137827/137827 co-relation queries the response was YES. [2024-06-28 02:52:58,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8453 conditions, 1522 events. 847/1522 cut-off events. For 137827/137827 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 8605 event pairs, 111 based on Foata normal form. 2/1522 useless extension candidates. Maximal degree in co-relation 8287. Up to 1408 conditions per place. [2024-06-28 02:52:58,751 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 297 selfloop transitions, 35 changer transitions 0/334 dead transitions. [2024-06-28 02:52:58,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 334 transitions, 3909 flow [2024-06-28 02:52:58,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:52:58,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:52:58,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-28 02:52:58,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375366568914956 [2024-06-28 02:52:58,752 INFO L175 Difference]: Start difference. First operand has 368 places, 317 transitions, 2937 flow. Second operand 11 states and 128 transitions. [2024-06-28 02:52:58,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 334 transitions, 3909 flow [2024-06-28 02:52:59,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 334 transitions, 3759 flow, removed 25 selfloop flow, removed 12 redundant places. [2024-06-28 02:52:59,280 INFO L231 Difference]: Finished difference. Result has 367 places, 317 transitions, 2862 flow [2024-06-28 02:52:59,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2787, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2862, PETRI_PLACES=367, PETRI_TRANSITIONS=317} [2024-06-28 02:52:59,281 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 337 predicate places. [2024-06-28 02:52:59,281 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 317 transitions, 2862 flow [2024-06-28 02:52:59,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:52:59,281 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:52:59,281 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:52:59,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-28 02:52:59,281 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:52:59,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:52:59,281 INFO L85 PathProgramCache]: Analyzing trace with hash 785109049, now seen corresponding path program 26 times [2024-06-28 02:52:59,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:52:59,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667930218] [2024-06-28 02:52:59,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:52:59,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:52:59,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:01,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:53:01,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:01,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667930218] [2024-06-28 02:53:01,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667930218] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:01,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:01,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:53:01,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849314853] [2024-06-28 02:53:01,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:01,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:53:01,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:01,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:53:01,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:53:01,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:53:01,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 317 transitions, 2862 flow. Second operand has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:01,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:01,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:53:01,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:01,962 INFO L124 PetriNetUnfolderBase]: 843/1516 cut-off events. [2024-06-28 02:53:01,962 INFO L125 PetriNetUnfolderBase]: For 122122/122122 co-relation queries the response was YES. [2024-06-28 02:53:01,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8047 conditions, 1516 events. 843/1516 cut-off events. For 122122/122122 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 8584 event pairs, 113 based on Foata normal form. 2/1516 useless extension candidates. Maximal degree in co-relation 7880. Up to 1430 conditions per place. [2024-06-28 02:53:01,979 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 302 selfloop transitions, 29 changer transitions 0/333 dead transitions. [2024-06-28 02:53:01,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 333 transitions, 3570 flow [2024-06-28 02:53:01,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:53:01,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:53:01,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-28 02:53:01,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3724340175953079 [2024-06-28 02:53:01,980 INFO L175 Difference]: Start difference. First operand has 367 places, 317 transitions, 2862 flow. Second operand 11 states and 127 transitions. [2024-06-28 02:53:01,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 333 transitions, 3570 flow [2024-06-28 02:53:02,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 333 transitions, 3386 flow, removed 17 selfloop flow, removed 12 redundant places. [2024-06-28 02:53:02,449 INFO L231 Difference]: Finished difference. Result has 366 places, 317 transitions, 2741 flow [2024-06-28 02:53:02,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2678, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2741, PETRI_PLACES=366, PETRI_TRANSITIONS=317} [2024-06-28 02:53:02,450 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 336 predicate places. [2024-06-28 02:53:02,450 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 317 transitions, 2741 flow [2024-06-28 02:53:02,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.25) internal successors, (87), 12 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:02,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:02,450 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:02,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-28 02:53:02,450 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:53:02,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:02,451 INFO L85 PathProgramCache]: Analyzing trace with hash -737082406, now seen corresponding path program 1 times [2024-06-28 02:53:02,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:02,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154950281] [2024-06-28 02:53:02,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:02,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:02,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:03,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:53:03,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:03,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154950281] [2024-06-28 02:53:03,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154950281] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:03,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:03,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:53:03,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459940829] [2024-06-28 02:53:03,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:03,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:53:03,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:03,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:53:03,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:53:03,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:53:03,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 317 transitions, 2741 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:03,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:03,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:53:03,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:04,569 INFO L124 PetriNetUnfolderBase]: 891/1616 cut-off events. [2024-06-28 02:53:04,569 INFO L125 PetriNetUnfolderBase]: For 278098/278098 co-relation queries the response was YES. [2024-06-28 02:53:04,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9865 conditions, 1616 events. 891/1616 cut-off events. For 278098/278098 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 9265 event pairs, 134 based on Foata normal form. 8/1622 useless extension candidates. Maximal degree in co-relation 9698. Up to 1291 conditions per place. [2024-06-28 02:53:04,583 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 306 selfloop transitions, 31 changer transitions 16/355 dead transitions. [2024-06-28 02:53:04,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 355 transitions, 3883 flow [2024-06-28 02:53:04,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 02:53:04,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 02:53:04,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 160 transitions. [2024-06-28 02:53:04,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3970223325062035 [2024-06-28 02:53:04,584 INFO L175 Difference]: Start difference. First operand has 366 places, 317 transitions, 2741 flow. Second operand 13 states and 160 transitions. [2024-06-28 02:53:04,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 355 transitions, 3883 flow [2024-06-28 02:53:05,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 355 transitions, 3759 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-28 02:53:05,263 INFO L231 Difference]: Finished difference. Result has 367 places, 313 transitions, 2658 flow [2024-06-28 02:53:05,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2617, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2658, PETRI_PLACES=367, PETRI_TRANSITIONS=313} [2024-06-28 02:53:05,264 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 337 predicate places. [2024-06-28 02:53:05,264 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 313 transitions, 2658 flow [2024-06-28 02:53:05,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:05,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:05,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:05,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-28 02:53:05,264 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:53:05,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:05,265 INFO L85 PathProgramCache]: Analyzing trace with hash -69940696, now seen corresponding path program 2 times [2024-06-28 02:53:05,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:05,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000201339] [2024-06-28 02:53:05,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:05,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:05,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:06,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:53:06,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:06,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000201339] [2024-06-28 02:53:06,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000201339] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:06,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:06,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:53:06,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651325057] [2024-06-28 02:53:06,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:06,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:53:06,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:06,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:53:06,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:53:06,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:53:06,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 313 transitions, 2658 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:06,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:06,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:53:06,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:07,582 INFO L124 PetriNetUnfolderBase]: 872/1581 cut-off events. [2024-06-28 02:53:07,582 INFO L125 PetriNetUnfolderBase]: For 300195/300195 co-relation queries the response was YES. [2024-06-28 02:53:07,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9429 conditions, 1581 events. 872/1581 cut-off events. For 300195/300195 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 9006 event pairs, 143 based on Foata normal form. 12/1591 useless extension candidates. Maximal degree in co-relation 9263. Up to 1418 conditions per place. [2024-06-28 02:53:07,599 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 296 selfloop transitions, 31 changer transitions 15/344 dead transitions. [2024-06-28 02:53:07,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 344 transitions, 3476 flow [2024-06-28 02:53:07,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-06-28 02:53:07,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-06-28 02:53:07,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 165 transitions. [2024-06-28 02:53:07,600 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 02:53:07,600 INFO L175 Difference]: Start difference. First operand has 367 places, 313 transitions, 2658 flow. Second operand 15 states and 165 transitions. [2024-06-28 02:53:07,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 344 transitions, 3476 flow [2024-06-28 02:53:08,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 344 transitions, 3420 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-28 02:53:08,287 INFO L231 Difference]: Finished difference. Result has 364 places, 305 transitions, 2600 flow [2024-06-28 02:53:08,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2602, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2600, PETRI_PLACES=364, PETRI_TRANSITIONS=305} [2024-06-28 02:53:08,287 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 334 predicate places. [2024-06-28 02:53:08,287 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 305 transitions, 2600 flow [2024-06-28 02:53:08,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:08,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:08,287 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:08,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-28 02:53:08,288 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:53:08,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:08,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1865829320, now seen corresponding path program 3 times [2024-06-28 02:53:08,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:08,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902797952] [2024-06-28 02:53:08,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:08,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:08,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:09,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:53:09,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:09,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902797952] [2024-06-28 02:53:09,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902797952] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:09,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:09,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:53:09,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397641564] [2024-06-28 02:53:09,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:09,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:53:09,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:09,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:53:09,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:53:09,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:53:09,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 305 transitions, 2600 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:09,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:09,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:53:09,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:10,386 INFO L124 PetriNetUnfolderBase]: 866/1583 cut-off events. [2024-06-28 02:53:10,386 INFO L125 PetriNetUnfolderBase]: For 319262/319262 co-relation queries the response was YES. [2024-06-28 02:53:10,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10366 conditions, 1583 events. 866/1583 cut-off events. For 319262/319262 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 9074 event pairs, 155 based on Foata normal form. 8/1589 useless extension candidates. Maximal degree in co-relation 10214. Up to 1396 conditions per place. [2024-06-28 02:53:10,403 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 300 selfloop transitions, 25 changer transitions 10/337 dead transitions. [2024-06-28 02:53:10,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 337 transitions, 3654 flow [2024-06-28 02:53:10,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 02:53:10,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 02:53:10,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 153 transitions. [2024-06-28 02:53:10,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37965260545905705 [2024-06-28 02:53:10,404 INFO L175 Difference]: Start difference. First operand has 364 places, 305 transitions, 2600 flow. Second operand 13 states and 153 transitions. [2024-06-28 02:53:10,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 337 transitions, 3654 flow [2024-06-28 02:53:11,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 337 transitions, 3577 flow, removed 5 selfloop flow, removed 14 redundant places. [2024-06-28 02:53:11,182 INFO L231 Difference]: Finished difference. Result has 360 places, 302 transitions, 2558 flow [2024-06-28 02:53:11,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2525, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2558, PETRI_PLACES=360, PETRI_TRANSITIONS=302} [2024-06-28 02:53:11,182 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 330 predicate places. [2024-06-28 02:53:11,182 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 302 transitions, 2558 flow [2024-06-28 02:53:11,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:11,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:11,182 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:11,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-28 02:53:11,183 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:53:11,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:11,183 INFO L85 PathProgramCache]: Analyzing trace with hash -69945346, now seen corresponding path program 4 times [2024-06-28 02:53:11,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:11,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518367018] [2024-06-28 02:53:11,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:11,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:11,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:12,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:53:12,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:12,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518367018] [2024-06-28 02:53:12,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518367018] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:12,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:12,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:53:12,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403226676] [2024-06-28 02:53:12,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:12,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:53:12,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:12,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:53:12,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:53:12,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:53:12,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 302 transitions, 2558 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:12,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:12,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:53:12,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:13,075 INFO L124 PetriNetUnfolderBase]: 868/1593 cut-off events. [2024-06-28 02:53:13,076 INFO L125 PetriNetUnfolderBase]: For 385726/385726 co-relation queries the response was YES. [2024-06-28 02:53:13,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10369 conditions, 1593 events. 868/1593 cut-off events. For 385726/385726 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 9144 event pairs, 151 based on Foata normal form. 16/1607 useless extension candidates. Maximal degree in co-relation 10217. Up to 1355 conditions per place. [2024-06-28 02:53:13,092 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 293 selfloop transitions, 18 changer transitions 15/328 dead transitions. [2024-06-28 02:53:13,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 328 transitions, 3598 flow [2024-06-28 02:53:13,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:53:13,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:53:13,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-28 02:53:13,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3841642228739003 [2024-06-28 02:53:13,093 INFO L175 Difference]: Start difference. First operand has 360 places, 302 transitions, 2558 flow. Second operand 11 states and 131 transitions. [2024-06-28 02:53:13,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 328 transitions, 3598 flow [2024-06-28 02:53:13,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 328 transitions, 3537 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-28 02:53:13,804 INFO L231 Difference]: Finished difference. Result has 355 places, 292 transitions, 2459 flow [2024-06-28 02:53:13,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2503, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2459, PETRI_PLACES=355, PETRI_TRANSITIONS=292} [2024-06-28 02:53:13,804 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 325 predicate places. [2024-06-28 02:53:13,804 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 292 transitions, 2459 flow [2024-06-28 02:53:13,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:13,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:13,805 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:13,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-28 02:53:13,805 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:53:13,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:13,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1672820252, now seen corresponding path program 5 times [2024-06-28 02:53:13,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:13,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188854398] [2024-06-28 02:53:13,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:13,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:13,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:15,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:53:15,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:15,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188854398] [2024-06-28 02:53:15,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188854398] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:15,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:15,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:53:15,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930838830] [2024-06-28 02:53:15,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:15,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:53:15,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:15,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:53:15,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:53:16,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:53:16,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 292 transitions, 2459 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:16,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:16,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:53:16,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:16,610 INFO L124 PetriNetUnfolderBase]: 824/1504 cut-off events. [2024-06-28 02:53:16,610 INFO L125 PetriNetUnfolderBase]: For 292013/292013 co-relation queries the response was YES. [2024-06-28 02:53:16,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9459 conditions, 1504 events. 824/1504 cut-off events. For 292013/292013 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 8491 event pairs, 151 based on Foata normal form. 10/1512 useless extension candidates. Maximal degree in co-relation 9309. Up to 1395 conditions per place. [2024-06-28 02:53:16,626 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 286 selfloop transitions, 18 changer transitions 9/315 dead transitions. [2024-06-28 02:53:16,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 315 transitions, 3189 flow [2024-06-28 02:53:16,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:53:16,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:53:16,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-28 02:53:16,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 02:53:16,627 INFO L175 Difference]: Start difference. First operand has 355 places, 292 transitions, 2459 flow. Second operand 12 states and 132 transitions. [2024-06-28 02:53:16,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 315 transitions, 3189 flow [2024-06-28 02:53:17,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 315 transitions, 3137 flow, removed 2 selfloop flow, removed 16 redundant places. [2024-06-28 02:53:17,190 INFO L231 Difference]: Finished difference. Result has 344 places, 289 transitions, 2426 flow [2024-06-28 02:53:17,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2407, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2426, PETRI_PLACES=344, PETRI_TRANSITIONS=289} [2024-06-28 02:53:17,190 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 314 predicate places. [2024-06-28 02:53:17,191 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 289 transitions, 2426 flow [2024-06-28 02:53:17,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:17,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:17,191 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:17,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-28 02:53:17,191 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:53:17,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:17,192 INFO L85 PathProgramCache]: Analyzing trace with hash 821616790, now seen corresponding path program 6 times [2024-06-28 02:53:17,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:17,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353281223] [2024-06-28 02:53:17,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:17,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:17,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:18,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:53:18,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:18,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353281223] [2024-06-28 02:53:18,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353281223] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:18,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:18,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:53:18,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960845878] [2024-06-28 02:53:18,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:18,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:53:18,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:18,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:53:18,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:53:18,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:53:18,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 289 transitions, 2426 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:18,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:18,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:53:18,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:19,283 INFO L124 PetriNetUnfolderBase]: 788/1436 cut-off events. [2024-06-28 02:53:19,283 INFO L125 PetriNetUnfolderBase]: For 207179/207179 co-relation queries the response was YES. [2024-06-28 02:53:19,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8125 conditions, 1436 events. 788/1436 cut-off events. For 207179/207179 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 8050 event pairs, 129 based on Foata normal form. 8/1442 useless extension candidates. Maximal degree in co-relation 7977. Up to 1291 conditions per place. [2024-06-28 02:53:19,300 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 287 selfloop transitions, 14 changer transitions 11/314 dead transitions. [2024-06-28 02:53:19,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 314 transitions, 3410 flow [2024-06-28 02:53:19,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:53:19,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:53:19,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-28 02:53:19,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375366568914956 [2024-06-28 02:53:19,301 INFO L175 Difference]: Start difference. First operand has 344 places, 289 transitions, 2426 flow. Second operand 11 states and 128 transitions. [2024-06-28 02:53:19,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 314 transitions, 3410 flow [2024-06-28 02:53:19,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 314 transitions, 3364 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-28 02:53:19,846 INFO L231 Difference]: Finished difference. Result has 341 places, 285 transitions, 2392 flow [2024-06-28 02:53:19,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2384, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2392, PETRI_PLACES=341, PETRI_TRANSITIONS=285} [2024-06-28 02:53:19,847 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 311 predicate places. [2024-06-28 02:53:19,847 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 285 transitions, 2392 flow [2024-06-28 02:53:19,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:19,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:19,847 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:19,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-28 02:53:19,847 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:53:19,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:19,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1920539192, now seen corresponding path program 1 times [2024-06-28 02:53:19,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:19,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253132054] [2024-06-28 02:53:19,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:19,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:19,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:21,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:53:21,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:21,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253132054] [2024-06-28 02:53:21,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253132054] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:21,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:21,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:53:21,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112415989] [2024-06-28 02:53:21,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:21,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:53:21,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:21,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:53:21,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:53:21,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:53:21,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 285 transitions, 2392 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:21,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:21,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:53:21,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:21,748 INFO L124 PetriNetUnfolderBase]: 769/1395 cut-off events. [2024-06-28 02:53:21,748 INFO L125 PetriNetUnfolderBase]: For 157664/157664 co-relation queries the response was YES. [2024-06-28 02:53:21,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7962 conditions, 1395 events. 769/1395 cut-off events. For 157664/157664 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 7744 event pairs, 102 based on Foata normal form. 2/1395 useless extension candidates. Maximal degree in co-relation 7815. Up to 804 conditions per place. [2024-06-28 02:53:21,763 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 170 selfloop transitions, 132 changer transitions 0/304 dead transitions. [2024-06-28 02:53:21,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 304 transitions, 3056 flow [2024-06-28 02:53:21,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:53:21,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:53:21,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-06-28 02:53:21,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4046920821114369 [2024-06-28 02:53:21,764 INFO L175 Difference]: Start difference. First operand has 341 places, 285 transitions, 2392 flow. Second operand 11 states and 138 transitions. [2024-06-28 02:53:21,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 304 transitions, 3056 flow [2024-06-28 02:53:22,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 304 transitions, 3023 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 02:53:22,357 INFO L231 Difference]: Finished difference. Result has 337 places, 286 transitions, 2639 flow [2024-06-28 02:53:22,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2359, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2639, PETRI_PLACES=337, PETRI_TRANSITIONS=286} [2024-06-28 02:53:22,357 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 307 predicate places. [2024-06-28 02:53:22,358 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 286 transitions, 2639 flow [2024-06-28 02:53:22,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:22,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:22,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:22,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-28 02:53:22,358 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:53:22,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:22,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1920547562, now seen corresponding path program 2 times [2024-06-28 02:53:22,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:22,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175397615] [2024-06-28 02:53:22,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:22,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:22,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:23,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:53:23,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:23,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175397615] [2024-06-28 02:53:23,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175397615] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:23,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:23,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:53:23,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472156865] [2024-06-28 02:53:23,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:23,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:53:23,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:23,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:53:23,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:53:24,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:53:24,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 286 transitions, 2639 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:24,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:24,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:53:24,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:24,612 INFO L124 PetriNetUnfolderBase]: 780/1416 cut-off events. [2024-06-28 02:53:24,612 INFO L125 PetriNetUnfolderBase]: For 168810/168810 co-relation queries the response was YES. [2024-06-28 02:53:24,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8583 conditions, 1416 events. 780/1416 cut-off events. For 168810/168810 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 7961 event pairs, 81 based on Foata normal form. 2/1416 useless extension candidates. Maximal degree in co-relation 8438. Up to 1039 conditions per place. [2024-06-28 02:53:24,626 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 214 selfloop transitions, 90 changer transitions 0/306 dead transitions. [2024-06-28 02:53:24,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 306 transitions, 3565 flow [2024-06-28 02:53:24,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:53:24,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:53:24,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-28 02:53:24,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39002932551319647 [2024-06-28 02:53:24,627 INFO L175 Difference]: Start difference. First operand has 337 places, 286 transitions, 2639 flow. Second operand 11 states and 133 transitions. [2024-06-28 02:53:24,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 306 transitions, 3565 flow [2024-06-28 02:53:25,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 306 transitions, 3295 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-28 02:53:25,289 INFO L231 Difference]: Finished difference. Result has 339 places, 288 transitions, 2579 flow [2024-06-28 02:53:25,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2369, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2579, PETRI_PLACES=339, PETRI_TRANSITIONS=288} [2024-06-28 02:53:25,289 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 309 predicate places. [2024-06-28 02:53:25,289 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 288 transitions, 2579 flow [2024-06-28 02:53:25,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:25,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:25,289 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:25,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-28 02:53:25,289 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:53:25,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:25,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1747818662, now seen corresponding path program 3 times [2024-06-28 02:53:25,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:25,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24873010] [2024-06-28 02:53:25,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:25,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:25,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:27,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:53:27,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:27,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24873010] [2024-06-28 02:53:27,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24873010] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:27,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:27,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:53:27,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553936398] [2024-06-28 02:53:27,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:27,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:53:27,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:27,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:53:27,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:53:27,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:53:27,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 288 transitions, 2579 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:27,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:27,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:53:27,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:28,322 INFO L124 PetriNetUnfolderBase]: 784/1424 cut-off events. [2024-06-28 02:53:28,323 INFO L125 PetriNetUnfolderBase]: For 171447/171447 co-relation queries the response was YES. [2024-06-28 02:53:28,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8538 conditions, 1424 events. 784/1424 cut-off events. For 171447/171447 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 8007 event pairs, 83 based on Foata normal form. 2/1424 useless extension candidates. Maximal degree in co-relation 8392. Up to 1078 conditions per place. [2024-06-28 02:53:28,338 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 221 selfloop transitions, 84 changer transitions 0/307 dead transitions. [2024-06-28 02:53:28,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 307 transitions, 3253 flow [2024-06-28 02:53:28,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:53:28,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:53:28,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-28 02:53:28,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-06-28 02:53:28,340 INFO L175 Difference]: Start difference. First operand has 339 places, 288 transitions, 2579 flow. Second operand 11 states and 134 transitions. [2024-06-28 02:53:28,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 307 transitions, 3253 flow [2024-06-28 02:53:28,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 307 transitions, 3124 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-28 02:53:28,901 INFO L231 Difference]: Finished difference. Result has 343 places, 289 transitions, 2638 flow [2024-06-28 02:53:28,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2454, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2638, PETRI_PLACES=343, PETRI_TRANSITIONS=289} [2024-06-28 02:53:28,902 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 313 predicate places. [2024-06-28 02:53:28,902 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 289 transitions, 2638 flow [2024-06-28 02:53:28,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:28,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:28,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:28,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-28 02:53:28,902 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:53:28,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:28,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1920301608, now seen corresponding path program 7 times [2024-06-28 02:53:28,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:28,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791897831] [2024-06-28 02:53:28,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:28,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:28,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:31,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:53:31,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:31,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791897831] [2024-06-28 02:53:31,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791897831] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:31,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:31,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:53:31,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053934375] [2024-06-28 02:53:31,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:31,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:53:31,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:31,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:53:31,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:53:31,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:53:31,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 289 transitions, 2638 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:31,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:31,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:53:31,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:32,160 INFO L124 PetriNetUnfolderBase]: 800/1460 cut-off events. [2024-06-28 02:53:32,160 INFO L125 PetriNetUnfolderBase]: For 236798/236798 co-relation queries the response was YES. [2024-06-28 02:53:32,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8846 conditions, 1460 events. 800/1460 cut-off events. For 236798/236798 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 8283 event pairs, 87 based on Foata normal form. 10/1468 useless extension candidates. Maximal degree in co-relation 8698. Up to 1070 conditions per place. [2024-06-28 02:53:32,178 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 214 selfloop transitions, 85 changer transitions 11/312 dead transitions. [2024-06-28 02:53:32,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 312 transitions, 3362 flow [2024-06-28 02:53:32,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:53:32,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:53:32,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-28 02:53:32,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3897849462365591 [2024-06-28 02:53:32,179 INFO L175 Difference]: Start difference. First operand has 343 places, 289 transitions, 2638 flow. Second operand 12 states and 145 transitions. [2024-06-28 02:53:32,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 312 transitions, 3362 flow [2024-06-28 02:53:32,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 312 transitions, 3190 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-28 02:53:32,824 INFO L231 Difference]: Finished difference. Result has 346 places, 286 transitions, 2620 flow [2024-06-28 02:53:32,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2466, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2620, PETRI_PLACES=346, PETRI_TRANSITIONS=286} [2024-06-28 02:53:32,825 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 316 predicate places. [2024-06-28 02:53:32,825 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 286 transitions, 2620 flow [2024-06-28 02:53:32,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:32,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:32,825 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:32,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-28 02:53:32,826 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:53:32,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:32,826 INFO L85 PathProgramCache]: Analyzing trace with hash -788194324, now seen corresponding path program 8 times [2024-06-28 02:53:32,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:32,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528456153] [2024-06-28 02:53:32,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:32,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:32,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:34,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:53:34,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:34,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528456153] [2024-06-28 02:53:34,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528456153] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:34,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:34,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:53:34,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973780903] [2024-06-28 02:53:34,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:34,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:53:34,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:34,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:53:34,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:53:34,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:53:34,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 286 transitions, 2620 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:34,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:34,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:53:34,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:35,114 INFO L124 PetriNetUnfolderBase]: 815/1497 cut-off events. [2024-06-28 02:53:35,114 INFO L125 PetriNetUnfolderBase]: For 303911/303911 co-relation queries the response was YES. [2024-06-28 02:53:35,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10253 conditions, 1497 events. 815/1497 cut-off events. For 303911/303911 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 8476 event pairs, 113 based on Foata normal form. 8/1503 useless extension candidates. Maximal degree in co-relation 10104. Up to 752 conditions per place. [2024-06-28 02:53:35,128 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 178 selfloop transitions, 124 changer transitions 9/313 dead transitions. [2024-06-28 02:53:35,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 313 transitions, 3628 flow [2024-06-28 02:53:35,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:53:35,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:53:35,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-28 02:53:35,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4310850439882698 [2024-06-28 02:53:35,129 INFO L175 Difference]: Start difference. First operand has 346 places, 286 transitions, 2620 flow. Second operand 11 states and 147 transitions. [2024-06-28 02:53:35,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 313 transitions, 3628 flow [2024-06-28 02:53:35,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 313 transitions, 3450 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-28 02:53:35,942 INFO L231 Difference]: Finished difference. Result has 343 places, 282 transitions, 2668 flow [2024-06-28 02:53:35,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2446, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2668, PETRI_PLACES=343, PETRI_TRANSITIONS=282} [2024-06-28 02:53:35,942 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 313 predicate places. [2024-06-28 02:53:35,943 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 282 transitions, 2668 flow [2024-06-28 02:53:35,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:35,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:35,943 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:35,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-28 02:53:35,943 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:53:35,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:35,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1913872518, now seen corresponding path program 9 times [2024-06-28 02:53:35,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:35,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426740388] [2024-06-28 02:53:35,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:35,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:35,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:37,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:53:37,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:37,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426740388] [2024-06-28 02:53:37,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426740388] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:37,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:37,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:53:37,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886488101] [2024-06-28 02:53:37,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:37,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:53:37,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:37,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:53:37,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:53:37,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:53:37,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 282 transitions, 2668 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:37,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:37,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:53:37,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:38,193 INFO L124 PetriNetUnfolderBase]: 807/1485 cut-off events. [2024-06-28 02:53:38,193 INFO L125 PetriNetUnfolderBase]: For 314218/314218 co-relation queries the response was YES. [2024-06-28 02:53:38,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10318 conditions, 1485 events. 807/1485 cut-off events. For 314218/314218 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 8471 event pairs, 108 based on Foata normal form. 10/1493 useless extension candidates. Maximal degree in co-relation 10170. Up to 1086 conditions per place. [2024-06-28 02:53:38,210 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 208 selfloop transitions, 85 changer transitions 11/306 dead transitions. [2024-06-28 02:53:38,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 306 transitions, 3384 flow [2024-06-28 02:53:38,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:53:38,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:53:38,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-28 02:53:38,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3978494623655914 [2024-06-28 02:53:38,211 INFO L175 Difference]: Start difference. First operand has 343 places, 282 transitions, 2668 flow. Second operand 12 states and 148 transitions. [2024-06-28 02:53:38,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 306 transitions, 3384 flow [2024-06-28 02:53:39,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 306 transitions, 3139 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 02:53:39,031 INFO L231 Difference]: Finished difference. Result has 342 places, 279 transitions, 2577 flow [2024-06-28 02:53:39,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2423, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2577, PETRI_PLACES=342, PETRI_TRANSITIONS=279} [2024-06-28 02:53:39,031 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 312 predicate places. [2024-06-28 02:53:39,031 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 279 transitions, 2577 flow [2024-06-28 02:53:39,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:39,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:39,031 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:39,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-28 02:53:39,031 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:53:39,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:39,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1913867868, now seen corresponding path program 10 times [2024-06-28 02:53:39,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:39,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964501686] [2024-06-28 02:53:39,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:39,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:39,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:40,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:53:40,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:40,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964501686] [2024-06-28 02:53:40,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964501686] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:40,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:40,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:53:40,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356732721] [2024-06-28 02:53:40,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:40,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:53:40,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:40,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:53:40,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:53:40,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:53:40,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 279 transitions, 2577 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:40,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:40,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:53:40,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:41,207 INFO L124 PetriNetUnfolderBase]: 824/1524 cut-off events. [2024-06-28 02:53:41,207 INFO L125 PetriNetUnfolderBase]: For 370530/370530 co-relation queries the response was YES. [2024-06-28 02:53:41,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11599 conditions, 1524 events. 824/1524 cut-off events. For 370530/370530 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 8702 event pairs, 113 based on Foata normal form. 8/1530 useless extension candidates. Maximal degree in co-relation 11452. Up to 1033 conditions per place. [2024-06-28 02:53:41,225 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 202 selfloop transitions, 95 changer transitions 8/307 dead transitions. [2024-06-28 02:53:41,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 307 transitions, 3571 flow [2024-06-28 02:53:41,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:53:41,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:53:41,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-28 02:53:41,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40860215053763443 [2024-06-28 02:53:41,226 INFO L175 Difference]: Start difference. First operand has 342 places, 279 transitions, 2577 flow. Second operand 12 states and 152 transitions. [2024-06-28 02:53:41,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 307 transitions, 3571 flow [2024-06-28 02:53:42,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 307 transitions, 3394 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-28 02:53:42,208 INFO L231 Difference]: Finished difference. Result has 341 places, 276 transitions, 2575 flow [2024-06-28 02:53:42,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2402, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2575, PETRI_PLACES=341, PETRI_TRANSITIONS=276} [2024-06-28 02:53:42,208 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 311 predicate places. [2024-06-28 02:53:42,209 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 276 transitions, 2575 flow [2024-06-28 02:53:42,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:42,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:42,209 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:42,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-28 02:53:42,209 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:53:42,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:42,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1914052442, now seen corresponding path program 4 times [2024-06-28 02:53:42,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:42,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384920375] [2024-06-28 02:53:42,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:42,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:42,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:44,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:53:44,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:44,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384920375] [2024-06-28 02:53:44,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384920375] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:44,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:44,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:53:44,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795224853] [2024-06-28 02:53:44,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:44,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:53:44,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:44,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:53:44,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:53:44,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:53:44,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 276 transitions, 2575 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:44,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:44,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:53:44,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:45,220 INFO L124 PetriNetUnfolderBase]: 802/1478 cut-off events. [2024-06-28 02:53:45,220 INFO L125 PetriNetUnfolderBase]: For 309201/309201 co-relation queries the response was YES. [2024-06-28 02:53:45,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11211 conditions, 1478 events. 802/1478 cut-off events. For 309201/309201 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 8433 event pairs, 122 based on Foata normal form. 2/1478 useless extension candidates. Maximal degree in co-relation 11064. Up to 1132 conditions per place. [2024-06-28 02:53:45,233 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 209 selfloop transitions, 83 changer transitions 0/294 dead transitions. [2024-06-28 02:53:45,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 294 transitions, 3209 flow [2024-06-28 02:53:45,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:53:45,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:53:45,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-28 02:53:45,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39002932551319647 [2024-06-28 02:53:45,235 INFO L175 Difference]: Start difference. First operand has 341 places, 276 transitions, 2575 flow. Second operand 11 states and 133 transitions. [2024-06-28 02:53:45,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 294 transitions, 3209 flow [2024-06-28 02:53:46,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 294 transitions, 3011 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-28 02:53:46,108 INFO L231 Difference]: Finished difference. Result has 337 places, 276 transitions, 2547 flow [2024-06-28 02:53:46,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2377, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2547, PETRI_PLACES=337, PETRI_TRANSITIONS=276} [2024-06-28 02:53:46,109 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 307 predicate places. [2024-06-28 02:53:46,109 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 276 transitions, 2547 flow [2024-06-28 02:53:46,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:46,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:46,109 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:46,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-28 02:53:46,109 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:53:46,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:46,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1914045498, now seen corresponding path program 11 times [2024-06-28 02:53:46,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:46,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159097062] [2024-06-28 02:53:46,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:46,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:46,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:48,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:53:48,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:48,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159097062] [2024-06-28 02:53:48,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159097062] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:48,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:48,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:53:48,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726087303] [2024-06-28 02:53:48,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:48,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:53:48,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:48,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:53:48,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:53:48,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:53:48,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 276 transitions, 2547 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:48,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:48,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:53:48,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:48,866 INFO L124 PetriNetUnfolderBase]: 789/1455 cut-off events. [2024-06-28 02:53:48,866 INFO L125 PetriNetUnfolderBase]: For 284398/284398 co-relation queries the response was YES. [2024-06-28 02:53:48,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9769 conditions, 1455 events. 789/1455 cut-off events. For 284398/284398 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 8285 event pairs, 107 based on Foata normal form. 10/1463 useless extension candidates. Maximal degree in co-relation 9624. Up to 1059 conditions per place. [2024-06-28 02:53:48,888 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 207 selfloop transitions, 82 changer transitions 9/300 dead transitions. [2024-06-28 02:53:48,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 300 transitions, 3249 flow [2024-06-28 02:53:48,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:53:48,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:53:48,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-28 02:53:48,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3951612903225806 [2024-06-28 02:53:48,889 INFO L175 Difference]: Start difference. First operand has 337 places, 276 transitions, 2547 flow. Second operand 12 states and 147 transitions. [2024-06-28 02:53:48,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 300 transitions, 3249 flow [2024-06-28 02:53:49,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 300 transitions, 3069 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 02:53:49,622 INFO L231 Difference]: Finished difference. Result has 339 places, 273 transitions, 2515 flow [2024-06-28 02:53:49,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2367, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2515, PETRI_PLACES=339, PETRI_TRANSITIONS=273} [2024-06-28 02:53:49,622 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 309 predicate places. [2024-06-28 02:53:49,622 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 273 transitions, 2515 flow [2024-06-28 02:53:49,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:49,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:49,623 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:49,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-28 02:53:49,623 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:53:49,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:49,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1743050118, now seen corresponding path program 12 times [2024-06-28 02:53:49,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:49,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471155024] [2024-06-28 02:53:49,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:49,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:49,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:51,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:53:51,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:51,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471155024] [2024-06-28 02:53:51,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471155024] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:51,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:51,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:53:51,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026711211] [2024-06-28 02:53:51,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:51,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:53:51,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:51,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:53:51,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:53:51,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:53:51,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 273 transitions, 2515 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:51,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:51,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:53:51,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:52,056 INFO L124 PetriNetUnfolderBase]: 790/1466 cut-off events. [2024-06-28 02:53:52,057 INFO L125 PetriNetUnfolderBase]: For 317499/317499 co-relation queries the response was YES. [2024-06-28 02:53:52,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10530 conditions, 1466 events. 790/1466 cut-off events. For 317499/317499 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 8356 event pairs, 108 based on Foata normal form. 8/1472 useless extension candidates. Maximal degree in co-relation 10384. Up to 974 conditions per place. [2024-06-28 02:53:52,073 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 206 selfloop transitions, 84 changer transitions 10/302 dead transitions. [2024-06-28 02:53:52,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 302 transitions, 3497 flow [2024-06-28 02:53:52,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:53:52,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:53:52,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-28 02:53:52,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40860215053763443 [2024-06-28 02:53:52,074 INFO L175 Difference]: Start difference. First operand has 339 places, 273 transitions, 2515 flow. Second operand 12 states and 152 transitions. [2024-06-28 02:53:52,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 302 transitions, 3497 flow [2024-06-28 02:53:52,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 302 transitions, 3323 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-28 02:53:52,995 INFO L231 Difference]: Finished difference. Result has 336 places, 270 transitions, 2499 flow [2024-06-28 02:53:52,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2345, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2499, PETRI_PLACES=336, PETRI_TRANSITIONS=270} [2024-06-28 02:53:52,996 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 306 predicate places. [2024-06-28 02:53:52,996 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 270 transitions, 2499 flow [2024-06-28 02:53:52,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:52,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:52,996 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:52,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-28 02:53:52,996 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:53:52,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:52,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1747811718, now seen corresponding path program 13 times [2024-06-28 02:53:52,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:52,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576826715] [2024-06-28 02:53:52,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:52,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:53,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:54,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:53:54,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:54,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576826715] [2024-06-28 02:53:54,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576826715] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:54,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:54,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:53:54,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112796628] [2024-06-28 02:53:54,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:54,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:53:54,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:54,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:53:54,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:53:55,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:53:55,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 270 transitions, 2499 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:55,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:55,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:53:55,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:55,898 INFO L124 PetriNetUnfolderBase]: 784/1456 cut-off events. [2024-06-28 02:53:55,898 INFO L125 PetriNetUnfolderBase]: For 327881/327881 co-relation queries the response was YES. [2024-06-28 02:53:55,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10505 conditions, 1456 events. 784/1456 cut-off events. For 327881/327881 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 8325 event pairs, 116 based on Foata normal form. 10/1464 useless extension candidates. Maximal degree in co-relation 10360. Up to 1060 conditions per place. [2024-06-28 02:53:55,913 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 203 selfloop transitions, 80 changer transitions 9/294 dead transitions. [2024-06-28 02:53:55,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 294 transitions, 3189 flow [2024-06-28 02:53:55,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:53:55,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:53:55,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-28 02:53:55,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3978494623655914 [2024-06-28 02:53:55,914 INFO L175 Difference]: Start difference. First operand has 336 places, 270 transitions, 2499 flow. Second operand 12 states and 148 transitions. [2024-06-28 02:53:55,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 294 transitions, 3189 flow [2024-06-28 02:53:56,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 294 transitions, 3028 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-28 02:53:56,767 INFO L231 Difference]: Finished difference. Result has 334 places, 267 transitions, 2476 flow [2024-06-28 02:53:56,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2338, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2476, PETRI_PLACES=334, PETRI_TRANSITIONS=267} [2024-06-28 02:53:56,767 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 304 predicate places. [2024-06-28 02:53:56,767 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 267 transitions, 2476 flow [2024-06-28 02:53:56,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:56,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:56,768 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:56,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-28 02:53:56,768 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:53:56,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:56,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1743170088, now seen corresponding path program 14 times [2024-06-28 02:53:56,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:56,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258375218] [2024-06-28 02:53:56,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:56,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:56,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:53:58,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:53:58,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:53:58,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258375218] [2024-06-28 02:53:58,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258375218] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:53:58,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:53:58,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:53:58,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586547268] [2024-06-28 02:53:58,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:53:58,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:53:58,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:53:58,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:53:58,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:53:58,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:53:58,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 267 transitions, 2476 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:58,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:53:58,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:53:58,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:53:59,055 INFO L124 PetriNetUnfolderBase]: 745/1383 cut-off events. [2024-06-28 02:53:59,056 INFO L125 PetriNetUnfolderBase]: For 244704/244704 co-relation queries the response was YES. [2024-06-28 02:53:59,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8921 conditions, 1383 events. 745/1383 cut-off events. For 244704/244704 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 7807 event pairs, 97 based on Foata normal form. 10/1391 useless extension candidates. Maximal degree in co-relation 8778. Up to 968 conditions per place. [2024-06-28 02:53:59,071 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 196 selfloop transitions, 78 changer transitions 17/293 dead transitions. [2024-06-28 02:53:59,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 293 transitions, 3168 flow [2024-06-28 02:53:59,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-06-28 02:53:59,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-06-28 02:53:59,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 163 transitions. [2024-06-28 02:53:59,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37557603686635943 [2024-06-28 02:53:59,072 INFO L175 Difference]: Start difference. First operand has 334 places, 267 transitions, 2476 flow. Second operand 14 states and 163 transitions. [2024-06-28 02:53:59,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 293 transitions, 3168 flow [2024-06-28 02:53:59,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 293 transitions, 3002 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-28 02:53:59,724 INFO L231 Difference]: Finished difference. Result has 334 places, 258 transitions, 2393 flow [2024-06-28 02:53:59,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2310, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2393, PETRI_PLACES=334, PETRI_TRANSITIONS=258} [2024-06-28 02:53:59,725 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 304 predicate places. [2024-06-28 02:53:59,725 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 258 transitions, 2393 flow [2024-06-28 02:53:59,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:53:59,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:53:59,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:53:59,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-28 02:53:59,726 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:53:59,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:53:59,726 INFO L85 PathProgramCache]: Analyzing trace with hash -162158888, now seen corresponding path program 5 times [2024-06-28 02:53:59,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:53:59,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204973479] [2024-06-28 02:53:59,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:53:59,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:53:59,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:54:01,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:54:01,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:54:01,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204973479] [2024-06-28 02:54:01,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204973479] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:54:01,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:54:01,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:54:01,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322412766] [2024-06-28 02:54:01,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:54:01,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:54:01,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:54:01,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:54:01,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:54:01,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:54:01,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 258 transitions, 2393 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:01,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:54:01,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:54:01,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:54:01,668 INFO L124 PetriNetUnfolderBase]: 714/1322 cut-off events. [2024-06-28 02:54:01,668 INFO L125 PetriNetUnfolderBase]: For 183400/183400 co-relation queries the response was YES. [2024-06-28 02:54:01,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8612 conditions, 1322 events. 714/1322 cut-off events. For 183400/183400 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 7324 event pairs, 120 based on Foata normal form. 2/1322 useless extension candidates. Maximal degree in co-relation 8470. Up to 1236 conditions per place. [2024-06-28 02:54:01,681 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 244 selfloop transitions, 30 changer transitions 0/276 dead transitions. [2024-06-28 02:54:01,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 276 transitions, 2999 flow [2024-06-28 02:54:01,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:54:01,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:54:01,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-28 02:54:01,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-28 02:54:01,682 INFO L175 Difference]: Start difference. First operand has 334 places, 258 transitions, 2393 flow. Second operand 11 states and 124 transitions. [2024-06-28 02:54:01,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 276 transitions, 2999 flow [2024-06-28 02:54:02,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 276 transitions, 2825 flow, removed 7 selfloop flow, removed 15 redundant places. [2024-06-28 02:54:02,233 INFO L231 Difference]: Finished difference. Result has 321 places, 259 transitions, 2299 flow [2024-06-28 02:54:02,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2219, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2299, PETRI_PLACES=321, PETRI_TRANSITIONS=259} [2024-06-28 02:54:02,234 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 291 predicate places. [2024-06-28 02:54:02,234 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 259 transitions, 2299 flow [2024-06-28 02:54:02,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:02,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:54:02,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:54:02,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-28 02:54:02,234 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:54:02,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:54:02,235 INFO L85 PathProgramCache]: Analyzing trace with hash -2121775544, now seen corresponding path program 6 times [2024-06-28 02:54:02,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:54:02,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115440115] [2024-06-28 02:54:02,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:54:02,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:54:02,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:54:03,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:54:03,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:54:03,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115440115] [2024-06-28 02:54:03,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115440115] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:54:03,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:54:03,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:54:03,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933488510] [2024-06-28 02:54:03,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:54:03,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:54:03,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:54:03,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:54:03,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:54:03,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:54:03,857 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 259 transitions, 2299 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:03,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:54:03,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:54:03,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:54:04,389 INFO L124 PetriNetUnfolderBase]: 718/1330 cut-off events. [2024-06-28 02:54:04,389 INFO L125 PetriNetUnfolderBase]: For 176049/176049 co-relation queries the response was YES. [2024-06-28 02:54:04,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8403 conditions, 1330 events. 718/1330 cut-off events. For 176049/176049 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 7382 event pairs, 118 based on Foata normal form. 2/1330 useless extension candidates. Maximal degree in co-relation 8264. Up to 1244 conditions per place. [2024-06-28 02:54:04,405 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 245 selfloop transitions, 30 changer transitions 0/277 dead transitions. [2024-06-28 02:54:04,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 277 transitions, 2907 flow [2024-06-28 02:54:04,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:54:04,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:54:04,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-28 02:54:04,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-28 02:54:04,406 INFO L175 Difference]: Start difference. First operand has 321 places, 259 transitions, 2299 flow. Second operand 11 states and 124 transitions. [2024-06-28 02:54:04,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 277 transitions, 2907 flow [2024-06-28 02:54:04,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 277 transitions, 2837 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-28 02:54:04,916 INFO L231 Difference]: Finished difference. Result has 323 places, 260 transitions, 2311 flow [2024-06-28 02:54:04,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2229, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2311, PETRI_PLACES=323, PETRI_TRANSITIONS=260} [2024-06-28 02:54:04,917 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 293 predicate places. [2024-06-28 02:54:04,917 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 260 transitions, 2311 flow [2024-06-28 02:54:04,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:04,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:54:04,917 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:54:04,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-28 02:54:04,917 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:54:04,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:54:04,918 INFO L85 PathProgramCache]: Analyzing trace with hash -391855868, now seen corresponding path program 7 times [2024-06-28 02:54:04,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:54:04,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498586650] [2024-06-28 02:54:04,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:54:04,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:54:04,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:54:06,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:54:06,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:54:06,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498586650] [2024-06-28 02:54:06,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498586650] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:54:06,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:54:06,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:54:06,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792430765] [2024-06-28 02:54:06,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:54:06,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:54:06,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:54:06,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:54:06,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:54:06,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:54:06,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 260 transitions, 2311 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:06,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:54:06,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:54:06,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:54:07,138 INFO L124 PetriNetUnfolderBase]: 722/1338 cut-off events. [2024-06-28 02:54:07,138 INFO L125 PetriNetUnfolderBase]: For 179324/179324 co-relation queries the response was YES. [2024-06-28 02:54:07,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8468 conditions, 1338 events. 722/1338 cut-off events. For 179324/179324 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 7444 event pairs, 132 based on Foata normal form. 2/1338 useless extension candidates. Maximal degree in co-relation 8328. Up to 1234 conditions per place. [2024-06-28 02:54:07,154 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 240 selfloop transitions, 37 changer transitions 0/279 dead transitions. [2024-06-28 02:54:07,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 279 transitions, 2933 flow [2024-06-28 02:54:07,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:54:07,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:54:07,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-28 02:54:07,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3841642228739003 [2024-06-28 02:54:07,155 INFO L175 Difference]: Start difference. First operand has 323 places, 260 transitions, 2311 flow. Second operand 11 states and 131 transitions. [2024-06-28 02:54:07,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 279 transitions, 2933 flow [2024-06-28 02:54:07,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 279 transitions, 2861 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-28 02:54:07,722 INFO L231 Difference]: Finished difference. Result has 325 places, 261 transitions, 2337 flow [2024-06-28 02:54:07,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2239, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2337, PETRI_PLACES=325, PETRI_TRANSITIONS=261} [2024-06-28 02:54:07,723 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 295 predicate places. [2024-06-28 02:54:07,723 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 261 transitions, 2337 flow [2024-06-28 02:54:07,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:07,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:54:07,723 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:54:07,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-28 02:54:07,723 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:54:07,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:54:07,724 INFO L85 PathProgramCache]: Analyzing trace with hash 48562984, now seen corresponding path program 15 times [2024-06-28 02:54:07,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:54:07,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890230982] [2024-06-28 02:54:07,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:54:07,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:54:07,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:54:09,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:54:09,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:54:09,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890230982] [2024-06-28 02:54:09,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890230982] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:54:09,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:54:09,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:54:09,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83925119] [2024-06-28 02:54:09,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:54:09,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:54:09,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:54:09,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:54:09,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:54:09,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:54:09,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 261 transitions, 2337 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:09,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:54:09,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:54:09,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:54:10,152 INFO L124 PetriNetUnfolderBase]: 770/1438 cut-off events. [2024-06-28 02:54:10,152 INFO L125 PetriNetUnfolderBase]: For 307916/307916 co-relation queries the response was YES. [2024-06-28 02:54:10,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10325 conditions, 1438 events. 770/1438 cut-off events. For 307916/307916 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 8180 event pairs, 128 based on Foata normal form. 8/1444 useless extension candidates. Maximal degree in co-relation 10184. Up to 998 conditions per place. [2024-06-28 02:54:10,168 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 220 selfloop transitions, 57 changer transitions 10/289 dead transitions. [2024-06-28 02:54:10,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 289 transitions, 3291 flow [2024-06-28 02:54:10,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:54:10,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:54:10,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-28 02:54:10,169 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41642228739002934 [2024-06-28 02:54:10,169 INFO L175 Difference]: Start difference. First operand has 325 places, 261 transitions, 2337 flow. Second operand 11 states and 142 transitions. [2024-06-28 02:54:10,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 289 transitions, 3291 flow [2024-06-28 02:54:11,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 289 transitions, 3203 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-28 02:54:11,065 INFO L231 Difference]: Finished difference. Result has 327 places, 258 transitions, 2348 flow [2024-06-28 02:54:11,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2249, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2348, PETRI_PLACES=327, PETRI_TRANSITIONS=258} [2024-06-28 02:54:11,065 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 297 predicate places. [2024-06-28 02:54:11,066 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 258 transitions, 2348 flow [2024-06-28 02:54:11,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:11,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:54:11,066 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:54:11,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-28 02:54:11,066 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:54:11,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:54:11,066 INFO L85 PathProgramCache]: Analyzing trace with hash 48682954, now seen corresponding path program 16 times [2024-06-28 02:54:11,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:54:11,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992328507] [2024-06-28 02:54:11,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:54:11,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:54:11,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:54:12,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:54:12,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:54:12,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992328507] [2024-06-28 02:54:12,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992328507] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:54:12,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:54:12,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:54:12,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974280687] [2024-06-28 02:54:12,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:54:12,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:54:12,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:54:12,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:54:12,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:54:12,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:54:12,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 258 transitions, 2348 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:12,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:54:12,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:54:12,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:54:13,091 INFO L124 PetriNetUnfolderBase]: 770/1438 cut-off events. [2024-06-28 02:54:13,091 INFO L125 PetriNetUnfolderBase]: For 327600/327600 co-relation queries the response was YES. [2024-06-28 02:54:13,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10424 conditions, 1438 events. 770/1438 cut-off events. For 327600/327600 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 8176 event pairs, 128 based on Foata normal form. 10/1446 useless extension candidates. Maximal degree in co-relation 10282. Up to 1161 conditions per place. [2024-06-28 02:54:13,106 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 198 selfloop transitions, 73 changer transitions 11/284 dead transitions. [2024-06-28 02:54:13,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 284 transitions, 3030 flow [2024-06-28 02:54:13,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:54:13,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:54:13,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-28 02:54:13,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-28 02:54:13,107 INFO L175 Difference]: Start difference. First operand has 327 places, 258 transitions, 2348 flow. Second operand 12 states and 150 transitions. [2024-06-28 02:54:13,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 284 transitions, 3030 flow [2024-06-28 02:54:13,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 284 transitions, 2933 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 02:54:13,981 INFO L231 Difference]: Finished difference. Result has 325 places, 257 transitions, 2395 flow [2024-06-28 02:54:13,982 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2253, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2395, PETRI_PLACES=325, PETRI_TRANSITIONS=257} [2024-06-28 02:54:13,982 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 295 predicate places. [2024-06-28 02:54:13,982 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 257 transitions, 2395 flow [2024-06-28 02:54:13,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:13,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:54:13,982 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:54:13,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-28 02:54:13,982 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:54:13,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:54:13,983 INFO L85 PathProgramCache]: Analyzing trace with hash 48678304, now seen corresponding path program 17 times [2024-06-28 02:54:13,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:54:13,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286960674] [2024-06-28 02:54:13,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:54:13,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:54:13,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:54:15,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:54:15,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:54:15,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286960674] [2024-06-28 02:54:15,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286960674] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:54:15,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:54:15,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:54:15,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085004009] [2024-06-28 02:54:15,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:54:15,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:54:15,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:54:15,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:54:15,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:54:15,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:54:15,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 257 transitions, 2395 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:15,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:54:15,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:54:15,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:54:15,989 INFO L124 PetriNetUnfolderBase]: 758/1418 cut-off events. [2024-06-28 02:54:15,989 INFO L125 PetriNetUnfolderBase]: For 302890/302890 co-relation queries the response was YES. [2024-06-28 02:54:16,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10356 conditions, 1418 events. 758/1418 cut-off events. For 302890/302890 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 8050 event pairs, 122 based on Foata normal form. 8/1424 useless extension candidates. Maximal degree in co-relation 10216. Up to 1151 conditions per place. [2024-06-28 02:54:16,003 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 196 selfloop transitions, 70 changer transitions 12/280 dead transitions. [2024-06-28 02:54:16,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 280 transitions, 3031 flow [2024-06-28 02:54:16,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:54:16,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:54:16,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-28 02:54:16,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3951612903225806 [2024-06-28 02:54:16,004 INFO L175 Difference]: Start difference. First operand has 325 places, 257 transitions, 2395 flow. Second operand 12 states and 147 transitions. [2024-06-28 02:54:16,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 280 transitions, 3031 flow [2024-06-28 02:54:16,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 280 transitions, 2910 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-28 02:54:16,735 INFO L231 Difference]: Finished difference. Result has 326 places, 253 transitions, 2388 flow [2024-06-28 02:54:16,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2274, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2388, PETRI_PLACES=326, PETRI_TRANSITIONS=253} [2024-06-28 02:54:16,736 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 296 predicate places. [2024-06-28 02:54:16,736 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 253 transitions, 2388 flow [2024-06-28 02:54:16,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:16,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:54:16,736 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:54:16,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-28 02:54:16,736 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:54:16,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:54:16,736 INFO L85 PathProgramCache]: Analyzing trace with hash -391847498, now seen corresponding path program 8 times [2024-06-28 02:54:16,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:54:16,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688184086] [2024-06-28 02:54:16,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:54:16,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:54:16,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:54:18,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:54:18,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:54:18,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688184086] [2024-06-28 02:54:18,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688184086] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:54:18,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:54:18,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:54:18,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456246652] [2024-06-28 02:54:18,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:54:18,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:54:18,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:54:18,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:54:18,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:54:18,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:54:18,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 253 transitions, 2388 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:18,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:54:18,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:54:18,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:54:18,722 INFO L124 PetriNetUnfolderBase]: 749/1395 cut-off events. [2024-06-28 02:54:18,722 INFO L125 PetriNetUnfolderBase]: For 276246/276246 co-relation queries the response was YES. [2024-06-28 02:54:18,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10588 conditions, 1395 events. 749/1395 cut-off events. For 276246/276246 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 7836 event pairs, 155 based on Foata normal form. 2/1395 useless extension candidates. Maximal degree in co-relation 10448. Up to 1268 conditions per place. [2024-06-28 02:54:18,734 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 233 selfloop transitions, 39 changer transitions 0/274 dead transitions. [2024-06-28 02:54:18,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 274 transitions, 3258 flow [2024-06-28 02:54:18,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:54:18,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:54:18,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-28 02:54:18,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-28 02:54:18,736 INFO L175 Difference]: Start difference. First operand has 326 places, 253 transitions, 2388 flow. Second operand 11 states and 132 transitions. [2024-06-28 02:54:18,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 274 transitions, 3258 flow [2024-06-28 02:54:19,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 274 transitions, 3110 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-28 02:54:19,520 INFO L231 Difference]: Finished difference. Result has 321 places, 255 transitions, 2368 flow [2024-06-28 02:54:19,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2244, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2368, PETRI_PLACES=321, PETRI_TRANSITIONS=255} [2024-06-28 02:54:19,521 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 291 predicate places. [2024-06-28 02:54:19,521 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 255 transitions, 2368 flow [2024-06-28 02:54:19,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:19,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:54:19,521 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:54:19,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-28 02:54:19,522 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:54:19,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:54:19,522 INFO L85 PathProgramCache]: Analyzing trace with hash -398342618, now seen corresponding path program 9 times [2024-06-28 02:54:19,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:54:19,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672502961] [2024-06-28 02:54:19,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:54:19,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:54:19,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:54:20,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:54:20,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:54:20,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672502961] [2024-06-28 02:54:20,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672502961] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:54:20,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:54:20,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:54:20,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187035338] [2024-06-28 02:54:20,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:54:20,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:54:20,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:54:20,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:54:20,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:54:21,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:54:21,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 255 transitions, 2368 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:21,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:54:21,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:54:21,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:54:21,510 INFO L124 PetriNetUnfolderBase]: 746/1390 cut-off events. [2024-06-28 02:54:21,510 INFO L125 PetriNetUnfolderBase]: For 257973/257973 co-relation queries the response was YES. [2024-06-28 02:54:21,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10221 conditions, 1390 events. 746/1390 cut-off events. For 257973/257973 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 7809 event pairs, 154 based on Foata normal form. 2/1390 useless extension candidates. Maximal degree in co-relation 10082. Up to 1286 conditions per place. [2024-06-28 02:54:21,526 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 234 selfloop transitions, 37 changer transitions 0/273 dead transitions. [2024-06-28 02:54:21,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 273 transitions, 2960 flow [2024-06-28 02:54:21,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:54:21,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:54:21,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-28 02:54:21,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3812316715542522 [2024-06-28 02:54:21,527 INFO L175 Difference]: Start difference. First operand has 321 places, 255 transitions, 2368 flow. Second operand 11 states and 130 transitions. [2024-06-28 02:54:21,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 273 transitions, 2960 flow [2024-06-28 02:54:22,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 273 transitions, 2878 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-28 02:54:22,336 INFO L231 Difference]: Finished difference. Result has 325 places, 255 transitions, 2364 flow [2024-06-28 02:54:22,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2286, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2364, PETRI_PLACES=325, PETRI_TRANSITIONS=255} [2024-06-28 02:54:22,337 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 295 predicate places. [2024-06-28 02:54:22,337 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 255 transitions, 2364 flow [2024-06-28 02:54:22,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:22,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:54:22,337 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:54:22,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-28 02:54:22,337 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:54:22,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:54:22,338 INFO L85 PathProgramCache]: Analyzing trace with hash -398349562, now seen corresponding path program 18 times [2024-06-28 02:54:22,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:54:22,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152872191] [2024-06-28 02:54:22,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:54:22,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:54:22,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:54:24,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:54:24,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:54:24,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152872191] [2024-06-28 02:54:24,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152872191] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:54:24,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:54:24,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:54:24,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726452633] [2024-06-28 02:54:24,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:54:24,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:54:24,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:54:24,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:54:24,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:54:24,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:54:24,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 255 transitions, 2364 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:24,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:54:24,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:54:24,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:54:25,168 INFO L124 PetriNetUnfolderBase]: 762/1426 cut-off events. [2024-06-28 02:54:25,168 INFO L125 PetriNetUnfolderBase]: For 316928/316928 co-relation queries the response was YES. [2024-06-28 02:54:25,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10399 conditions, 1426 events. 762/1426 cut-off events. For 316928/316928 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 8128 event pairs, 158 based on Foata normal form. 10/1434 useless extension candidates. Maximal degree in co-relation 10258. Up to 1278 conditions per place. [2024-06-28 02:54:25,185 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 231 selfloop transitions, 35 changer transitions 11/279 dead transitions. [2024-06-28 02:54:25,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 279 transitions, 3018 flow [2024-06-28 02:54:25,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:54:25,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:54:25,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 143 transitions. [2024-06-28 02:54:25,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3844086021505376 [2024-06-28 02:54:25,186 INFO L175 Difference]: Start difference. First operand has 325 places, 255 transitions, 2364 flow. Second operand 12 states and 143 transitions. [2024-06-28 02:54:25,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 279 transitions, 3018 flow [2024-06-28 02:54:26,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 279 transitions, 2938 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-28 02:54:26,091 INFO L231 Difference]: Finished difference. Result has 327 places, 252 transitions, 2328 flow [2024-06-28 02:54:26,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2284, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2328, PETRI_PLACES=327, PETRI_TRANSITIONS=252} [2024-06-28 02:54:26,092 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 297 predicate places. [2024-06-28 02:54:26,092 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 252 transitions, 2328 flow [2024-06-28 02:54:26,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:26,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:54:26,092 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:54:26,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-28 02:54:26,092 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:54:26,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:54:26,092 INFO L85 PathProgramCache]: Analyzing trace with hash 2107105190, now seen corresponding path program 19 times [2024-06-28 02:54:26,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:54:26,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103611973] [2024-06-28 02:54:26,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:54:26,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:54:26,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:54:27,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:54:27,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:54:27,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103611973] [2024-06-28 02:54:27,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103611973] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:54:27,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:54:27,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:54:27,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998284392] [2024-06-28 02:54:27,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:54:27,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:54:27,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:54:27,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:54:27,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:54:27,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:54:27,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 252 transitions, 2328 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:27,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:54:27,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:54:27,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:54:28,457 INFO L124 PetriNetUnfolderBase]: 752/1412 cut-off events. [2024-06-28 02:54:28,458 INFO L125 PetriNetUnfolderBase]: For 322187/322187 co-relation queries the response was YES. [2024-06-28 02:54:28,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10338 conditions, 1412 events. 752/1412 cut-off events. For 322187/322187 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 8041 event pairs, 142 based on Foata normal form. 10/1420 useless extension candidates. Maximal degree in co-relation 10196. Up to 1264 conditions per place. [2024-06-28 02:54:28,473 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 229 selfloop transitions, 34 changer transitions 11/276 dead transitions. [2024-06-28 02:54:28,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 276 transitions, 2976 flow [2024-06-28 02:54:28,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:54:28,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:54:28,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 143 transitions. [2024-06-28 02:54:28,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3844086021505376 [2024-06-28 02:54:28,474 INFO L175 Difference]: Start difference. First operand has 327 places, 252 transitions, 2328 flow. Second operand 12 states and 143 transitions. [2024-06-28 02:54:28,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 276 transitions, 2976 flow [2024-06-28 02:54:29,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 276 transitions, 2902 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-28 02:54:29,323 INFO L231 Difference]: Finished difference. Result has 325 places, 249 transitions, 2296 flow [2024-06-28 02:54:29,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2254, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2296, PETRI_PLACES=325, PETRI_TRANSITIONS=249} [2024-06-28 02:54:29,323 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 295 predicate places. [2024-06-28 02:54:29,323 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 249 transitions, 2296 flow [2024-06-28 02:54:29,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:29,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:54:29,324 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:54:29,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-28 02:54:29,324 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:54:29,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:54:29,324 INFO L85 PathProgramCache]: Analyzing trace with hash 2013236484, now seen corresponding path program 10 times [2024-06-28 02:54:29,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:54:29,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543279698] [2024-06-28 02:54:29,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:54:29,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:54:29,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:54:30,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:54:30,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:54:30,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543279698] [2024-06-28 02:54:30,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543279698] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:54:30,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:54:30,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:54:30,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037890010] [2024-06-28 02:54:30,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:54:30,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:54:30,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:54:30,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:54:30,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:54:31,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:54:31,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 249 transitions, 2296 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:31,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:54:31,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:54:31,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:54:31,580 INFO L124 PetriNetUnfolderBase]: 730/1370 cut-off events. [2024-06-28 02:54:31,580 INFO L125 PetriNetUnfolderBase]: For 262222/262222 co-relation queries the response was YES. [2024-06-28 02:54:31,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10127 conditions, 1370 events. 730/1370 cut-off events. For 262222/262222 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 7757 event pairs, 146 based on Foata normal form. 2/1370 useless extension candidates. Maximal degree in co-relation 9986. Up to 1223 conditions per place. [2024-06-28 02:54:31,595 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 220 selfloop transitions, 46 changer transitions 0/268 dead transitions. [2024-06-28 02:54:31,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 268 transitions, 2900 flow [2024-06-28 02:54:31,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:54:31,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:54:31,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-28 02:54:31,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39002932551319647 [2024-06-28 02:54:31,596 INFO L175 Difference]: Start difference. First operand has 325 places, 249 transitions, 2296 flow. Second operand 11 states and 133 transitions. [2024-06-28 02:54:31,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 268 transitions, 2900 flow [2024-06-28 02:54:32,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 268 transitions, 2828 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-28 02:54:32,423 INFO L231 Difference]: Finished difference. Result has 322 places, 250 transitions, 2344 flow [2024-06-28 02:54:32,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2224, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2344, PETRI_PLACES=322, PETRI_TRANSITIONS=250} [2024-06-28 02:54:32,423 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 292 predicate places. [2024-06-28 02:54:32,423 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 250 transitions, 2344 flow [2024-06-28 02:54:32,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:32,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:54:32,424 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:54:32,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-28 02:54:32,424 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:54:32,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:54:32,425 INFO L85 PathProgramCache]: Analyzing trace with hash 217460886, now seen corresponding path program 20 times [2024-06-28 02:54:32,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:54:32,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040452122] [2024-06-28 02:54:32,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:54:32,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:54:32,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:54:34,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:54:34,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:54:34,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040452122] [2024-06-28 02:54:34,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040452122] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:54:34,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:54:34,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:54:34,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886981933] [2024-06-28 02:54:34,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:54:34,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:54:34,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:54:34,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:54:34,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:54:34,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:54:34,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 250 transitions, 2344 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:34,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:54:34,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:54:34,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:54:34,971 INFO L124 PetriNetUnfolderBase]: 746/1406 cut-off events. [2024-06-28 02:54:34,971 INFO L125 PetriNetUnfolderBase]: For 311968/311968 co-relation queries the response was YES. [2024-06-28 02:54:34,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10284 conditions, 1406 events. 746/1406 cut-off events. For 311968/311968 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 8052 event pairs, 150 based on Foata normal form. 10/1414 useless extension candidates. Maximal degree in co-relation 10144. Up to 1160 conditions per place. [2024-06-28 02:54:34,987 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 209 selfloop transitions, 51 changer transitions 12/274 dead transitions. [2024-06-28 02:54:34,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 274 transitions, 2988 flow [2024-06-28 02:54:34,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:54:34,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:54:34,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-28 02:54:34,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-28 02:54:34,988 INFO L175 Difference]: Start difference. First operand has 322 places, 250 transitions, 2344 flow. Second operand 12 states and 150 transitions. [2024-06-28 02:54:34,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 274 transitions, 2988 flow [2024-06-28 02:54:35,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 274 transitions, 2878 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-28 02:54:35,732 INFO L231 Difference]: Finished difference. Result has 325 places, 244 transitions, 2290 flow [2024-06-28 02:54:35,732 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2234, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2290, PETRI_PLACES=325, PETRI_TRANSITIONS=244} [2024-06-28 02:54:35,733 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 295 predicate places. [2024-06-28 02:54:35,733 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 244 transitions, 2290 flow [2024-06-28 02:54:35,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:35,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:54:35,733 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:54:35,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-28 02:54:35,733 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:54:35,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:54:35,734 INFO L85 PathProgramCache]: Analyzing trace with hash 2100676100, now seen corresponding path program 21 times [2024-06-28 02:54:35,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:54:35,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873392972] [2024-06-28 02:54:35,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:54:35,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:54:35,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:54:37,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:54:37,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:54:37,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873392972] [2024-06-28 02:54:37,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873392972] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:54:37,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:54:37,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:54:37,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495900833] [2024-06-28 02:54:37,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:54:37,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:54:37,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:54:37,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:54:37,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:54:37,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:54:37,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 244 transitions, 2290 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:37,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:54:37,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:54:37,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:54:37,776 INFO L124 PetriNetUnfolderBase]: 728/1380 cut-off events. [2024-06-28 02:54:37,776 INFO L125 PetriNetUnfolderBase]: For 316542/316542 co-relation queries the response was YES. [2024-06-28 02:54:37,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10167 conditions, 1380 events. 728/1380 cut-off events. For 316542/316542 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 7882 event pairs, 138 based on Foata normal form. 10/1388 useless extension candidates. Maximal degree in co-relation 10026. Up to 1216 conditions per place. [2024-06-28 02:54:37,791 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 214 selfloop transitions, 40 changer transitions 11/267 dead transitions. [2024-06-28 02:54:37,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 267 transitions, 2916 flow [2024-06-28 02:54:37,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:54:37,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:54:37,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 144 transitions. [2024-06-28 02:54:37,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-28 02:54:37,792 INFO L175 Difference]: Start difference. First operand has 325 places, 244 transitions, 2290 flow. Second operand 12 states and 144 transitions. [2024-06-28 02:54:37,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 267 transitions, 2916 flow [2024-06-28 02:54:38,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 267 transitions, 2790 flow, removed 2 selfloop flow, removed 14 redundant places. [2024-06-28 02:54:38,631 INFO L231 Difference]: Finished difference. Result has 321 places, 241 transitions, 2226 flow [2024-06-28 02:54:38,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2164, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2226, PETRI_PLACES=321, PETRI_TRANSITIONS=241} [2024-06-28 02:54:38,631 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 291 predicate places. [2024-06-28 02:54:38,631 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 241 transitions, 2226 flow [2024-06-28 02:54:38,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:38,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:54:38,632 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:54:38,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-28 02:54:38,632 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:54:38,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:54:38,632 INFO L85 PathProgramCache]: Analyzing trace with hash 2100671450, now seen corresponding path program 22 times [2024-06-28 02:54:38,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:54:38,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887838371] [2024-06-28 02:54:38,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:54:38,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:54:38,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:54:39,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:54:39,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:54:39,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887838371] [2024-06-28 02:54:39,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887838371] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:54:39,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:54:39,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:54:39,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436597317] [2024-06-28 02:54:39,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:54:39,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:54:39,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:54:39,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:54:39,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:54:39,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:54:39,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 241 transitions, 2226 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:39,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:54:39,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:54:39,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:54:40,489 INFO L124 PetriNetUnfolderBase]: 731/1393 cut-off events. [2024-06-28 02:54:40,489 INFO L125 PetriNetUnfolderBase]: For 336989/336989 co-relation queries the response was YES. [2024-06-28 02:54:40,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10792 conditions, 1393 events. 731/1393 cut-off events. For 336989/336989 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 8017 event pairs, 151 based on Foata normal form. 8/1399 useless extension candidates. Maximal degree in co-relation 10652. Up to 1201 conditions per place. [2024-06-28 02:54:40,504 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 223 selfloop transitions, 32 changer transitions 8/265 dead transitions. [2024-06-28 02:54:40,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 265 transitions, 3082 flow [2024-06-28 02:54:40,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:54:40,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:54:40,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 136 transitions. [2024-06-28 02:54:40,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39882697947214074 [2024-06-28 02:54:40,505 INFO L175 Difference]: Start difference. First operand has 321 places, 241 transitions, 2226 flow. Second operand 11 states and 136 transitions. [2024-06-28 02:54:40,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 265 transitions, 3082 flow [2024-06-28 02:54:41,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 265 transitions, 2994 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-28 02:54:41,400 INFO L231 Difference]: Finished difference. Result has 318 places, 238 transitions, 2184 flow [2024-06-28 02:54:41,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2142, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2184, PETRI_PLACES=318, PETRI_TRANSITIONS=238} [2024-06-28 02:54:41,401 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 288 predicate places. [2024-06-28 02:54:41,401 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 238 transitions, 2184 flow [2024-06-28 02:54:41,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:41,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:54:41,401 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:54:41,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-28 02:54:41,402 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:54:41,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:54:41,402 INFO L85 PathProgramCache]: Analyzing trace with hash 217283256, now seen corresponding path program 23 times [2024-06-28 02:54:41,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:54:41,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608257497] [2024-06-28 02:54:41,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:54:41,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:54:41,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:54:43,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:54:43,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:54:43,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608257497] [2024-06-28 02:54:43,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608257497] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:54:43,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:54:43,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:54:43,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832079809] [2024-06-28 02:54:43,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:54:43,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:54:43,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:54:43,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:54:43,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:54:43,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:54:43,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 238 transitions, 2184 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:43,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:54:43,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:54:43,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:54:43,792 INFO L124 PetriNetUnfolderBase]: 739/1413 cut-off events. [2024-06-28 02:54:43,792 INFO L125 PetriNetUnfolderBase]: For 370592/370592 co-relation queries the response was YES. [2024-06-28 02:54:43,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11489 conditions, 1413 events. 739/1413 cut-off events. For 370592/370592 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 8142 event pairs, 156 based on Foata normal form. 8/1419 useless extension candidates. Maximal degree in co-relation 11350. Up to 1188 conditions per place. [2024-06-28 02:54:43,808 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 212 selfloop transitions, 41 changer transitions 9/264 dead transitions. [2024-06-28 02:54:43,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 264 transitions, 3042 flow [2024-06-28 02:54:43,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:54:43,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:54:43,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-28 02:54:43,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3978494623655914 [2024-06-28 02:54:43,809 INFO L175 Difference]: Start difference. First operand has 318 places, 238 transitions, 2184 flow. Second operand 12 states and 148 transitions. [2024-06-28 02:54:43,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 264 transitions, 3042 flow [2024-06-28 02:54:44,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 264 transitions, 2968 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-28 02:54:44,782 INFO L231 Difference]: Finished difference. Result has 316 places, 235 transitions, 2179 flow [2024-06-28 02:54:44,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2116, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2179, PETRI_PLACES=316, PETRI_TRANSITIONS=235} [2024-06-28 02:54:44,782 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 286 predicate places. [2024-06-28 02:54:44,782 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 235 transitions, 2179 flow [2024-06-28 02:54:44,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:44,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:54:44,782 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:54:44,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-28 02:54:44,782 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:54:44,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:54:44,783 INFO L85 PathProgramCache]: Analyzing trace with hash 470249226, now seen corresponding path program 11 times [2024-06-28 02:54:44,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:54:44,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46609846] [2024-06-28 02:54:44,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:54:44,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:54:44,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:54:46,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:54:46,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:54:46,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46609846] [2024-06-28 02:54:46,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46609846] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:54:46,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:54:46,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:54:46,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596307876] [2024-06-28 02:54:46,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:54:46,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:54:46,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:54:46,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:54:46,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:54:46,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:54:46,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 235 transitions, 2179 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:46,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:54:46,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:54:46,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:54:46,946 INFO L124 PetriNetUnfolderBase]: 724/1380 cut-off events. [2024-06-28 02:54:46,946 INFO L125 PetriNetUnfolderBase]: For 320108/320108 co-relation queries the response was YES. [2024-06-28 02:54:46,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11335 conditions, 1380 events. 724/1380 cut-off events. For 320108/320108 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 7892 event pairs, 158 based on Foata normal form. 2/1380 useless extension candidates. Maximal degree in co-relation 11198. Up to 1233 conditions per place. [2024-06-28 02:54:46,961 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 210 selfloop transitions, 42 changer transitions 0/254 dead transitions. [2024-06-28 02:54:46,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 254 transitions, 2757 flow [2024-06-28 02:54:46,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:54:46,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:54:46,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-28 02:54:46,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39002932551319647 [2024-06-28 02:54:46,962 INFO L175 Difference]: Start difference. First operand has 316 places, 235 transitions, 2179 flow. Second operand 11 states and 133 transitions. [2024-06-28 02:54:46,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 254 transitions, 2757 flow [2024-06-28 02:54:48,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 254 transitions, 2672 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 02:54:48,036 INFO L231 Difference]: Finished difference. Result has 313 places, 236 transitions, 2208 flow [2024-06-28 02:54:48,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2094, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2208, PETRI_PLACES=313, PETRI_TRANSITIONS=236} [2024-06-28 02:54:48,036 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 283 predicate places. [2024-06-28 02:54:48,036 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 236 transitions, 2208 flow [2024-06-28 02:54:48,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:48,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:54:48,036 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:54:48,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-28 02:54:48,037 INFO L420 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:54:48,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:54:48,037 INFO L85 PathProgramCache]: Analyzing trace with hash 390196730, now seen corresponding path program 12 times [2024-06-28 02:54:48,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:54:48,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865777069] [2024-06-28 02:54:48,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:54:48,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:54:48,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:54:49,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:54:49,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:54:49,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865777069] [2024-06-28 02:54:49,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865777069] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:54:49,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:54:49,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:54:49,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944180079] [2024-06-28 02:54:49,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:54:49,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:54:49,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:54:49,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:54:49,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:54:49,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:54:49,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 236 transitions, 2208 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:49,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:54:49,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:54:49,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:54:50,015 INFO L124 PetriNetUnfolderBase]: 728/1388 cut-off events. [2024-06-28 02:54:50,015 INFO L125 PetriNetUnfolderBase]: For 314998/314998 co-relation queries the response was YES. [2024-06-28 02:54:50,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11370 conditions, 1388 events. 728/1388 cut-off events. For 314998/314998 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 7973 event pairs, 156 based on Foata normal form. 2/1388 useless extension candidates. Maximal degree in co-relation 11234. Up to 1212 conditions per place. [2024-06-28 02:54:50,031 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 210 selfloop transitions, 45 changer transitions 0/257 dead transitions. [2024-06-28 02:54:50,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 257 transitions, 3046 flow [2024-06-28 02:54:50,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:54:50,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:54:50,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-28 02:54:50,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-06-28 02:54:50,032 INFO L175 Difference]: Start difference. First operand has 313 places, 236 transitions, 2208 flow. Second operand 11 states and 134 transitions. [2024-06-28 02:54:50,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 257 transitions, 3046 flow [2024-06-28 02:54:50,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 257 transitions, 2942 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-28 02:54:50,874 INFO L231 Difference]: Finished difference. Result has 315 places, 238 transitions, 2252 flow [2024-06-28 02:54:50,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2104, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2252, PETRI_PLACES=315, PETRI_TRANSITIONS=238} [2024-06-28 02:54:50,874 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 285 predicate places. [2024-06-28 02:54:50,874 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 238 transitions, 2252 flow [2024-06-28 02:54:50,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:50,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:54:50,875 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:54:50,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-28 02:54:50,875 INFO L420 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:54:50,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:54:50,875 INFO L85 PathProgramCache]: Analyzing trace with hash 383701610, now seen corresponding path program 13 times [2024-06-28 02:54:50,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:54:50,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375300439] [2024-06-28 02:54:50,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:54:50,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:54:50,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:54:52,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:54:52,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:54:52,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375300439] [2024-06-28 02:54:52,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375300439] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:54:52,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:54:52,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:54:52,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998512597] [2024-06-28 02:54:52,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:54:52,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:54:52,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:54:52,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:54:52,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:54:52,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:54:52,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 238 transitions, 2252 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:52,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:54:52,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:54:52,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:54:53,066 INFO L124 PetriNetUnfolderBase]: 725/1383 cut-off events. [2024-06-28 02:54:53,067 INFO L125 PetriNetUnfolderBase]: For 307522/307522 co-relation queries the response was YES. [2024-06-28 02:54:53,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11137 conditions, 1383 events. 725/1383 cut-off events. For 307522/307522 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 7933 event pairs, 173 based on Foata normal form. 2/1383 useless extension candidates. Maximal degree in co-relation 11000. Up to 1236 conditions per place. [2024-06-28 02:54:53,082 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 214 selfloop transitions, 41 changer transitions 0/257 dead transitions. [2024-06-28 02:54:53,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 257 transitions, 2816 flow [2024-06-28 02:54:53,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:54:53,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:54:53,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-28 02:54:53,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-06-28 02:54:53,083 INFO L175 Difference]: Start difference. First operand has 315 places, 238 transitions, 2252 flow. Second operand 11 states and 134 transitions. [2024-06-28 02:54:53,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 257 transitions, 2816 flow [2024-06-28 02:54:53,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 257 transitions, 2716 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-28 02:54:53,878 INFO L231 Difference]: Finished difference. Result has 319 places, 238 transitions, 2238 flow [2024-06-28 02:54:53,878 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2152, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2238, PETRI_PLACES=319, PETRI_TRANSITIONS=238} [2024-06-28 02:54:53,878 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 289 predicate places. [2024-06-28 02:54:53,878 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 238 transitions, 2238 flow [2024-06-28 02:54:53,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:53,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:54:53,878 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:54:53,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-28 02:54:53,878 INFO L420 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:54:53,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:54:53,879 INFO L85 PathProgramCache]: Analyzing trace with hash 383517036, now seen corresponding path program 24 times [2024-06-28 02:54:53,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:54:53,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744477100] [2024-06-28 02:54:53,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:54:53,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:54:53,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:54:55,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:54:55,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:54:55,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744477100] [2024-06-28 02:54:55,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744477100] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:54:55,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:54:55,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:54:55,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092186040] [2024-06-28 02:54:55,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:54:55,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:54:55,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:54:55,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:54:55,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:54:55,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:54:55,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 238 transitions, 2238 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:55,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:54:55,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:54:55,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:54:56,067 INFO L124 PetriNetUnfolderBase]: 737/1411 cut-off events. [2024-06-28 02:54:56,067 INFO L125 PetriNetUnfolderBase]: For 351042/351042 co-relation queries the response was YES. [2024-06-28 02:54:56,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11259 conditions, 1411 events. 737/1411 cut-off events. For 351042/351042 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 8136 event pairs, 151 based on Foata normal form. 8/1417 useless extension candidates. Maximal degree in co-relation 11120. Up to 1110 conditions per place. [2024-06-28 02:54:56,080 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 213 selfloop transitions, 45 changer transitions 7/267 dead transitions. [2024-06-28 02:54:56,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 267 transitions, 3128 flow [2024-06-28 02:54:56,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:54:56,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:54:56,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-28 02:54:56,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40860215053763443 [2024-06-28 02:54:56,081 INFO L175 Difference]: Start difference. First operand has 319 places, 238 transitions, 2238 flow. Second operand 12 states and 152 transitions. [2024-06-28 02:54:56,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 267 transitions, 3128 flow [2024-06-28 02:54:57,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 267 transitions, 3036 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 02:54:57,469 INFO L231 Difference]: Finished difference. Result has 321 places, 236 transitions, 2225 flow [2024-06-28 02:54:57,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2146, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2225, PETRI_PLACES=321, PETRI_TRANSITIONS=236} [2024-06-28 02:54:57,469 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 291 predicate places. [2024-06-28 02:54:57,470 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 236 transitions, 2225 flow [2024-06-28 02:54:57,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:57,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:54:57,470 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:54:57,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-28 02:54:57,470 INFO L420 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:54:57,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:54:57,470 INFO L85 PathProgramCache]: Analyzing trace with hash 225814474, now seen corresponding path program 25 times [2024-06-28 02:54:57,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:54:57,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278283612] [2024-06-28 02:54:57,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:54:57,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:54:57,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:54:58,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:54:58,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:54:58,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278283612] [2024-06-28 02:54:58,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278283612] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:54:58,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:54:58,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:54:58,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230776706] [2024-06-28 02:54:58,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:54:58,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:54:58,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:54:58,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:54:58,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:54:58,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:54:58,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 236 transitions, 2225 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:54:58,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:54:58,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:54:58,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:54:59,505 INFO L124 PetriNetUnfolderBase]: 735/1409 cut-off events. [2024-06-28 02:54:59,505 INFO L125 PetriNetUnfolderBase]: For 370892/370892 co-relation queries the response was YES. [2024-06-28 02:54:59,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11318 conditions, 1409 events. 735/1409 cut-off events. For 370892/370892 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 8160 event pairs, 161 based on Foata normal form. 10/1417 useless extension candidates. Maximal degree in co-relation 11178. Up to 1191 conditions per place. [2024-06-28 02:54:59,521 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 201 selfloop transitions, 41 changer transitions 14/258 dead transitions. [2024-06-28 02:54:59,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 258 transitions, 2831 flow [2024-06-28 02:54:59,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:54:59,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:54:59,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 139 transitions. [2024-06-28 02:54:59,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40762463343108507 [2024-06-28 02:54:59,522 INFO L175 Difference]: Start difference. First operand has 321 places, 236 transitions, 2225 flow. Second operand 11 states and 139 transitions. [2024-06-28 02:54:59,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 258 transitions, 2831 flow [2024-06-28 02:55:00,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 258 transitions, 2745 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-28 02:55:00,474 INFO L231 Difference]: Finished difference. Result has 319 places, 230 transitions, 2172 flow [2024-06-28 02:55:00,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2139, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2172, PETRI_PLACES=319, PETRI_TRANSITIONS=230} [2024-06-28 02:55:00,475 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 289 predicate places. [2024-06-28 02:55:00,475 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 230 transitions, 2172 flow [2024-06-28 02:55:00,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:00,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:55:00,475 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:55:00,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-28 02:55:00,475 INFO L420 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:55:00,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:55:00,475 INFO L85 PathProgramCache]: Analyzing trace with hash 383521686, now seen corresponding path program 26 times [2024-06-28 02:55:00,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:55:00,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888821105] [2024-06-28 02:55:00,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:55:00,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:55:00,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:55:01,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:55:01,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:55:01,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888821105] [2024-06-28 02:55:01,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888821105] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:55:01,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:55:01,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:55:01,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751367401] [2024-06-28 02:55:01,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:55:01,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:55:01,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:55:01,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:55:01,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:55:02,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:55:02,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 230 transitions, 2172 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:02,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:55:02,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:55:02,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:55:02,637 INFO L124 PetriNetUnfolderBase]: 715/1377 cut-off events. [2024-06-28 02:55:02,637 INFO L125 PetriNetUnfolderBase]: For 364484/364484 co-relation queries the response was YES. [2024-06-28 02:55:02,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11121 conditions, 1377 events. 715/1377 cut-off events. For 364484/364484 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 7961 event pairs, 149 based on Foata normal form. 10/1385 useless extension candidates. Maximal degree in co-relation 10982. Up to 1170 conditions per place. [2024-06-28 02:55:02,654 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 198 selfloop transitions, 43 changer transitions 12/255 dead transitions. [2024-06-28 02:55:02,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 255 transitions, 2782 flow [2024-06-28 02:55:02,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:55:02,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:55:02,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 150 transitions. [2024-06-28 02:55:02,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-28 02:55:02,655 INFO L175 Difference]: Start difference. First operand has 319 places, 230 transitions, 2172 flow. Second operand 12 states and 150 transitions. [2024-06-28 02:55:02,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 255 transitions, 2782 flow [2024-06-28 02:55:03,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 255 transitions, 2690 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-28 02:55:03,506 INFO L231 Difference]: Finished difference. Result has 314 places, 226 transitions, 2135 flow [2024-06-28 02:55:03,507 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2080, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2135, PETRI_PLACES=314, PETRI_TRANSITIONS=226} [2024-06-28 02:55:03,507 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 284 predicate places. [2024-06-28 02:55:03,507 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 226 transitions, 2135 flow [2024-06-28 02:55:03,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:03,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:55:03,507 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:55:03,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-28 02:55:03,507 INFO L420 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:55:03,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:55:03,507 INFO L85 PathProgramCache]: Analyzing trace with hash 383694666, now seen corresponding path program 27 times [2024-06-28 02:55:03,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:55:03,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518293746] [2024-06-28 02:55:03,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:55:03,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:55:03,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:55:05,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:55:05,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:55:05,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518293746] [2024-06-28 02:55:05,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518293746] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:55:05,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:55:05,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:55:05,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645616401] [2024-06-28 02:55:05,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:55:05,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:55:05,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:55:05,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:55:05,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:55:05,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:55:05,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 226 transitions, 2135 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:05,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:55:05,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:55:05,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:55:05,901 INFO L124 PetriNetUnfolderBase]: 692/1336 cut-off events. [2024-06-28 02:55:05,901 INFO L125 PetriNetUnfolderBase]: For 320054/320054 co-relation queries the response was YES. [2024-06-28 02:55:05,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10342 conditions, 1336 events. 692/1336 cut-off events. For 320054/320054 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 7655 event pairs, 153 based on Foata normal form. 10/1344 useless extension candidates. Maximal degree in co-relation 10206. Up to 1147 conditions per place. [2024-06-28 02:55:05,915 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 203 selfloop transitions, 36 changer transitions 9/250 dead transitions. [2024-06-28 02:55:05,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 250 transitions, 2731 flow [2024-06-28 02:55:05,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:55:05,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:55:05,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-28 02:55:05,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3897849462365591 [2024-06-28 02:55:05,916 INFO L175 Difference]: Start difference. First operand has 314 places, 226 transitions, 2135 flow. Second operand 12 states and 145 transitions. [2024-06-28 02:55:05,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 250 transitions, 2731 flow [2024-06-28 02:55:06,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 250 transitions, 2639 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-28 02:55:06,910 INFO L231 Difference]: Finished difference. Result has 310 places, 223 transitions, 2092 flow [2024-06-28 02:55:06,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2043, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2092, PETRI_PLACES=310, PETRI_TRANSITIONS=223} [2024-06-28 02:55:06,910 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 280 predicate places. [2024-06-28 02:55:06,910 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 223 transitions, 2092 flow [2024-06-28 02:55:06,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:06,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:55:06,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:55:06,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-28 02:55:06,911 INFO L420 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:55:06,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:55:06,911 INFO L85 PathProgramCache]: Analyzing trace with hash -4907354, now seen corresponding path program 14 times [2024-06-28 02:55:06,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:55:06,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129930639] [2024-06-28 02:55:06,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:55:06,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:55:06,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:55:08,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:55:08,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:55:08,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129930639] [2024-06-28 02:55:08,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129930639] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:55:08,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:55:08,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:55:08,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363660806] [2024-06-28 02:55:08,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:55:08,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:55:08,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:55:08,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:55:08,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:55:08,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:55:08,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 223 transitions, 2092 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:08,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:55:08,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:55:08,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:55:09,480 INFO L124 PetriNetUnfolderBase]: 670/1294 cut-off events. [2024-06-28 02:55:09,480 INFO L125 PetriNetUnfolderBase]: For 260867/260867 co-relation queries the response was YES. [2024-06-28 02:55:09,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10078 conditions, 1294 events. 670/1294 cut-off events. For 260867/260867 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 7339 event pairs, 162 based on Foata normal form. 2/1294 useless extension candidates. Maximal degree in co-relation 9944. Up to 1222 conditions per place. [2024-06-28 02:55:09,493 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 213 selfloop transitions, 24 changer transitions 0/239 dead transitions. [2024-06-28 02:55:09,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 239 transitions, 2632 flow [2024-06-28 02:55:09,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:55:09,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:55:09,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-28 02:55:09,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35777126099706746 [2024-06-28 02:55:09,494 INFO L175 Difference]: Start difference. First operand has 310 places, 223 transitions, 2092 flow. Second operand 11 states and 122 transitions. [2024-06-28 02:55:09,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 239 transitions, 2632 flow [2024-06-28 02:55:10,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 239 transitions, 2554 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-28 02:55:10,554 INFO L231 Difference]: Finished difference. Result has 307 places, 224 transitions, 2094 flow [2024-06-28 02:55:10,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2014, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2094, PETRI_PLACES=307, PETRI_TRANSITIONS=224} [2024-06-28 02:55:10,554 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 277 predicate places. [2024-06-28 02:55:10,555 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 224 transitions, 2094 flow [2024-06-28 02:55:10,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:10,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:55:10,555 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:55:10,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-28 02:55:10,555 INFO L420 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:55:10,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:55:10,556 INFO L85 PathProgramCache]: Analyzing trace with hash -348816936, now seen corresponding path program 15 times [2024-06-28 02:55:10,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:55:10,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254455359] [2024-06-28 02:55:10,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:55:10,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:55:10,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:55:12,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:55:12,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:55:12,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254455359] [2024-06-28 02:55:12,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254455359] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:55:12,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:55:12,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:55:12,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107341763] [2024-06-28 02:55:12,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:55:12,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:55:12,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:55:12,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:55:12,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:55:12,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:55:12,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 224 transitions, 2094 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:12,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:55:12,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:55:12,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:55:12,833 INFO L124 PetriNetUnfolderBase]: 710/1374 cut-off events. [2024-06-28 02:55:12,833 INFO L125 PetriNetUnfolderBase]: For 327392/327392 co-relation queries the response was YES. [2024-06-28 02:55:12,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11727 conditions, 1374 events. 710/1374 cut-off events. For 327392/327392 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 7916 event pairs, 174 based on Foata normal form. 2/1374 useless extension candidates. Maximal degree in co-relation 11594. Up to 1181 conditions per place. [2024-06-28 02:55:12,848 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 211 selfloop transitions, 33 changer transitions 0/246 dead transitions. [2024-06-28 02:55:12,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 246 transitions, 2940 flow [2024-06-28 02:55:12,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:55:12,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:55:12,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-28 02:55:12,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3782991202346041 [2024-06-28 02:55:12,849 INFO L175 Difference]: Start difference. First operand has 307 places, 224 transitions, 2094 flow. Second operand 11 states and 129 transitions. [2024-06-28 02:55:12,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 246 transitions, 2940 flow [2024-06-28 02:55:13,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 246 transitions, 2870 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-28 02:55:13,972 INFO L231 Difference]: Finished difference. Result has 309 places, 226 transitions, 2152 flow [2024-06-28 02:55:13,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2024, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2152, PETRI_PLACES=309, PETRI_TRANSITIONS=226} [2024-06-28 02:55:13,972 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 279 predicate places. [2024-06-28 02:55:13,972 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 226 transitions, 2152 flow [2024-06-28 02:55:13,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:13,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:55:13,973 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:55:13,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-28 02:55:13,973 INFO L420 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:55:13,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:55:13,973 INFO L85 PathProgramCache]: Analyzing trace with hash -2083838120, now seen corresponding path program 16 times [2024-06-28 02:55:13,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:55:13,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069055339] [2024-06-28 02:55:13,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:55:13,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:55:13,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:55:15,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:55:15,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:55:15,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069055339] [2024-06-28 02:55:15,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069055339] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:55:15,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:55:15,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:55:15,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997862561] [2024-06-28 02:55:15,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:55:15,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:55:15,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:55:15,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:55:15,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:55:15,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:55:15,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 226 transitions, 2152 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:15,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:55:15,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:55:15,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:55:16,406 INFO L124 PetriNetUnfolderBase]: 714/1382 cut-off events. [2024-06-28 02:55:16,407 INFO L125 PetriNetUnfolderBase]: For 333857/333857 co-relation queries the response was YES. [2024-06-28 02:55:16,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11848 conditions, 1382 events. 714/1382 cut-off events. For 333857/333857 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 8022 event pairs, 162 based on Foata normal form. 2/1382 useless extension candidates. Maximal degree in co-relation 11714. Up to 1215 conditions per place. [2024-06-28 02:55:16,423 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 187 selfloop transitions, 53 changer transitions 0/242 dead transitions. [2024-06-28 02:55:16,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 242 transitions, 2702 flow [2024-06-28 02:55:16,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:55:16,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:55:16,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-28 02:55:16,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36656891495601174 [2024-06-28 02:55:16,424 INFO L175 Difference]: Start difference. First operand has 309 places, 226 transitions, 2152 flow. Second operand 11 states and 125 transitions. [2024-06-28 02:55:16,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 242 transitions, 2702 flow [2024-06-28 02:55:17,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 242 transitions, 2628 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-28 02:55:17,698 INFO L231 Difference]: Finished difference. Result has 313 places, 227 transitions, 2220 flow [2024-06-28 02:55:17,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2078, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2220, PETRI_PLACES=313, PETRI_TRANSITIONS=227} [2024-06-28 02:55:17,699 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 283 predicate places. [2024-06-28 02:55:17,699 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 227 transitions, 2220 flow [2024-06-28 02:55:17,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:17,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:55:17,699 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:55:17,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-28 02:55:17,699 INFO L420 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:55:17,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:55:17,700 INFO L85 PathProgramCache]: Analyzing trace with hash -2088606664, now seen corresponding path program 28 times [2024-06-28 02:55:17,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:55:17,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051143991] [2024-06-28 02:55:17,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:55:17,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:55:17,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:55:18,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:55:18,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:55:18,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051143991] [2024-06-28 02:55:18,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051143991] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:55:18,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:55:18,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:55:18,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103912874] [2024-06-28 02:55:18,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:55:18,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:55:18,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:55:18,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:55:18,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:55:19,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:55:19,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 227 transitions, 2220 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:19,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:55:19,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:55:19,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:55:19,767 INFO L124 PetriNetUnfolderBase]: 755/1469 cut-off events. [2024-06-28 02:55:19,768 INFO L125 PetriNetUnfolderBase]: For 436467/436467 co-relation queries the response was YES. [2024-06-28 02:55:19,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13385 conditions, 1469 events. 755/1469 cut-off events. For 436467/436467 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 8597 event pairs, 159 based on Foata normal form. 8/1475 useless extension candidates. Maximal degree in co-relation 13249. Up to 848 conditions per place. [2024-06-28 02:55:19,783 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 164 selfloop transitions, 77 changer transitions 10/253 dead transitions. [2024-06-28 02:55:19,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 253 transitions, 3062 flow [2024-06-28 02:55:19,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:55:19,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:55:19,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 144 transitions. [2024-06-28 02:55:19,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-28 02:55:19,784 INFO L175 Difference]: Start difference. First operand has 313 places, 227 transitions, 2220 flow. Second operand 12 states and 144 transitions. [2024-06-28 02:55:19,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 253 transitions, 3062 flow [2024-06-28 02:55:20,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 253 transitions, 2961 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-28 02:55:20,925 INFO L231 Difference]: Finished difference. Result has 318 places, 224 transitions, 2257 flow [2024-06-28 02:55:20,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2119, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2257, PETRI_PLACES=318, PETRI_TRANSITIONS=224} [2024-06-28 02:55:20,925 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 288 predicate places. [2024-06-28 02:55:20,925 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 224 transitions, 2257 flow [2024-06-28 02:55:20,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:20,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:55:20,926 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:55:20,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-28 02:55:20,926 INFO L420 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:55:20,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:55:20,927 INFO L85 PathProgramCache]: Analyzing trace with hash -349062890, now seen corresponding path program 29 times [2024-06-28 02:55:20,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:55:20,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900545630] [2024-06-28 02:55:20,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:55:20,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:55:20,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:55:22,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:55:22,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:55:22,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900545630] [2024-06-28 02:55:22,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900545630] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:55:22,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:55:22,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:55:22,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134873590] [2024-06-28 02:55:22,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:55:22,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:55:22,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:55:22,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:55:22,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:55:23,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:55:23,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 224 transitions, 2257 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:23,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:55:23,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:55:23,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:55:23,915 INFO L124 PetriNetUnfolderBase]: 749/1459 cut-off events. [2024-06-28 02:55:23,915 INFO L125 PetriNetUnfolderBase]: For 456919/456919 co-relation queries the response was YES. [2024-06-28 02:55:23,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13494 conditions, 1459 events. 749/1459 cut-off events. For 456919/456919 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 8570 event pairs, 203 based on Foata normal form. 10/1467 useless extension candidates. Maximal degree in co-relation 13357. Up to 1343 conditions per place. [2024-06-28 02:55:23,931 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 210 selfloop transitions, 22 changer transitions 11/245 dead transitions. [2024-06-28 02:55:23,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 245 transitions, 2833 flow [2024-06-28 02:55:23,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:55:23,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:55:23,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-28 02:55:23,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3629032258064516 [2024-06-28 02:55:23,932 INFO L175 Difference]: Start difference. First operand has 318 places, 224 transitions, 2257 flow. Second operand 12 states and 135 transitions. [2024-06-28 02:55:23,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 245 transitions, 2833 flow [2024-06-28 02:55:25,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 245 transitions, 2733 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-28 02:55:25,344 INFO L231 Difference]: Finished difference. Result has 316 places, 221 transitions, 2171 flow [2024-06-28 02:55:25,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2157, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2171, PETRI_PLACES=316, PETRI_TRANSITIONS=221} [2024-06-28 02:55:25,344 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 286 predicate places. [2024-06-28 02:55:25,345 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 221 transitions, 2171 flow [2024-06-28 02:55:25,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:25,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:55:25,345 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:55:25,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-28 02:55:25,345 INFO L420 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:55:25,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:55:25,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1016068570, now seen corresponding path program 17 times [2024-06-28 02:55:25,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:55:25,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126015054] [2024-06-28 02:55:25,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:55:25,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:55:25,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:55:26,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:55:26,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:55:26,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126015054] [2024-06-28 02:55:26,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126015054] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:55:26,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:55:26,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:55:26,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322346761] [2024-06-28 02:55:26,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:55:26,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:55:26,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:55:26,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:55:26,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:55:26,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:55:26,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 221 transitions, 2171 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:26,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:55:26,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:55:26,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:55:27,256 INFO L124 PetriNetUnfolderBase]: 729/1427 cut-off events. [2024-06-28 02:55:27,256 INFO L125 PetriNetUnfolderBase]: For 428497/428497 co-relation queries the response was YES. [2024-06-28 02:55:27,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12762 conditions, 1427 events. 729/1427 cut-off events. For 428497/428497 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 8386 event pairs, 201 based on Foata normal form. 12/1437 useless extension candidates. Maximal degree in co-relation 12627. Up to 1306 conditions per place. [2024-06-28 02:55:27,274 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 201 selfloop transitions, 18 changer transitions 19/240 dead transitions. [2024-06-28 02:55:27,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 240 transitions, 2759 flow [2024-06-28 02:55:27,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:55:27,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:55:27,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-28 02:55:27,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36070381231671556 [2024-06-28 02:55:27,275 INFO L175 Difference]: Start difference. First operand has 316 places, 221 transitions, 2171 flow. Second operand 11 states and 123 transitions. [2024-06-28 02:55:27,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 240 transitions, 2759 flow [2024-06-28 02:55:28,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 240 transitions, 2711 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-28 02:55:28,393 INFO L231 Difference]: Finished difference. Result has 313 places, 211 transitions, 2067 flow [2024-06-28 02:55:28,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2123, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2067, PETRI_PLACES=313, PETRI_TRANSITIONS=211} [2024-06-28 02:55:28,393 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 283 predicate places. [2024-06-28 02:55:28,394 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 211 transitions, 2067 flow [2024-06-28 02:55:28,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:28,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:55:28,394 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:55:28,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-28 02:55:28,394 INFO L420 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:55:28,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:55:28,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1016060200, now seen corresponding path program 18 times [2024-06-28 02:55:28,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:55:28,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366086924] [2024-06-28 02:55:28,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:55:28,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:55:28,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:55:29,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:55:29,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:55:29,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366086924] [2024-06-28 02:55:29,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366086924] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:55:29,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:55:29,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:55:29,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337120357] [2024-06-28 02:55:29,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:55:29,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:55:29,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:55:29,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:55:29,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:55:29,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:55:29,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 211 transitions, 2067 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:29,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:55:29,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:55:29,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:55:30,408 INFO L124 PetriNetUnfolderBase]: 689/1355 cut-off events. [2024-06-28 02:55:30,408 INFO L125 PetriNetUnfolderBase]: For 361905/361905 co-relation queries the response was YES. [2024-06-28 02:55:30,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12367 conditions, 1355 events. 689/1355 cut-off events. For 361905/361905 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 7896 event pairs, 195 based on Foata normal form. 2/1355 useless extension candidates. Maximal degree in co-relation 12233. Up to 1298 conditions per place. [2024-06-28 02:55:30,423 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 204 selfloop transitions, 20 changer transitions 0/226 dead transitions. [2024-06-28 02:55:30,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 226 transitions, 2581 flow [2024-06-28 02:55:30,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:55:30,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:55:30,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-28 02:55:30,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34017595307917886 [2024-06-28 02:55:30,424 INFO L175 Difference]: Start difference. First operand has 313 places, 211 transitions, 2067 flow. Second operand 11 states and 116 transitions. [2024-06-28 02:55:30,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 226 transitions, 2581 flow [2024-06-28 02:55:31,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 226 transitions, 2395 flow, removed 4 selfloop flow, removed 15 redundant places. [2024-06-28 02:55:31,499 INFO L231 Difference]: Finished difference. Result has 306 places, 212 transitions, 1959 flow [2024-06-28 02:55:31,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1881, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1959, PETRI_PLACES=306, PETRI_TRANSITIONS=212} [2024-06-28 02:55:31,499 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 276 predicate places. [2024-06-28 02:55:31,499 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 212 transitions, 1959 flow [2024-06-28 02:55:31,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:31,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:55:31,499 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:55:31,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-28 02:55:31,500 INFO L420 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:55:31,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:55:31,500 INFO L85 PathProgramCache]: Analyzing trace with hash -777797782, now seen corresponding path program 19 times [2024-06-28 02:55:31,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:55:31,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371163092] [2024-06-28 02:55:31,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:55:31,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:55:31,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:55:32,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:55:32,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:55:32,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371163092] [2024-06-28 02:55:32,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371163092] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:55:32,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:55:32,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:55:32,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851553661] [2024-06-28 02:55:32,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:55:32,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:55:32,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:55:32,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:55:32,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:55:33,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:55:33,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 212 transitions, 1959 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:33,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:55:33,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:55:33,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:55:33,654 INFO L124 PetriNetUnfolderBase]: 673/1327 cut-off events. [2024-06-28 02:55:33,655 INFO L125 PetriNetUnfolderBase]: For 344619/344619 co-relation queries the response was YES. [2024-06-28 02:55:33,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10704 conditions, 1327 events. 673/1327 cut-off events. For 344619/344619 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 7719 event pairs, 171 based on Foata normal form. 12/1337 useless extension candidates. Maximal degree in co-relation 10573. Up to 1188 conditions per place. [2024-06-28 02:55:33,668 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 196 selfloop transitions, 26 changer transitions 7/231 dead transitions. [2024-06-28 02:55:33,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 231 transitions, 2497 flow [2024-06-28 02:55:33,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:55:33,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:55:33,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-28 02:55:33,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3724340175953079 [2024-06-28 02:55:33,669 INFO L175 Difference]: Start difference. First operand has 306 places, 212 transitions, 1959 flow. Second operand 11 states and 127 transitions. [2024-06-28 02:55:33,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 231 transitions, 2497 flow [2024-06-28 02:55:34,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 231 transitions, 2417 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-28 02:55:34,630 INFO L231 Difference]: Finished difference. Result has 308 places, 209 transitions, 1910 flow [2024-06-28 02:55:34,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1879, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1910, PETRI_PLACES=308, PETRI_TRANSITIONS=209} [2024-06-28 02:55:34,630 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 278 predicate places. [2024-06-28 02:55:34,631 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 209 transitions, 1910 flow [2024-06-28 02:55:34,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:34,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:55:34,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:55:34,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-28 02:55:34,631 INFO L420 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:55:34,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:55:34,631 INFO L85 PathProgramCache]: Analyzing trace with hash 35725434, now seen corresponding path program 20 times [2024-06-28 02:55:34,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:55:34,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226143895] [2024-06-28 02:55:34,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:55:34,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:55:34,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:55:35,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:55:35,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:55:35,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226143895] [2024-06-28 02:55:35,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226143895] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:55:35,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:55:35,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:55:35,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278912523] [2024-06-28 02:55:35,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:55:35,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:55:35,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:55:35,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:55:35,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:55:36,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:55:36,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 209 transitions, 1910 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:36,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:55:36,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:55:36,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:55:36,632 INFO L124 PetriNetUnfolderBase]: 661/1307 cut-off events. [2024-06-28 02:55:36,633 INFO L125 PetriNetUnfolderBase]: For 324823/324823 co-relation queries the response was YES. [2024-06-28 02:55:36,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10651 conditions, 1307 events. 661/1307 cut-off events. For 324823/324823 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 7604 event pairs, 175 based on Foata normal form. 8/1313 useless extension candidates. Maximal degree in co-relation 10519. Up to 1185 conditions per place. [2024-06-28 02:55:36,647 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 198 selfloop transitions, 18 changer transitions 13/231 dead transitions. [2024-06-28 02:55:36,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 231 transitions, 2502 flow [2024-06-28 02:55:36,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:55:36,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:55:36,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-28 02:55:36,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36950146627565983 [2024-06-28 02:55:36,648 INFO L175 Difference]: Start difference. First operand has 308 places, 209 transitions, 1910 flow. Second operand 11 states and 126 transitions. [2024-06-28 02:55:36,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 231 transitions, 2502 flow [2024-06-28 02:55:37,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 231 transitions, 2437 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 02:55:37,806 INFO L231 Difference]: Finished difference. Result has 309 places, 207 transitions, 1864 flow [2024-06-28 02:55:37,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1845, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1864, PETRI_PLACES=309, PETRI_TRANSITIONS=207} [2024-06-28 02:55:37,807 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 279 predicate places. [2024-06-28 02:55:37,807 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 207 transitions, 1864 flow [2024-06-28 02:55:37,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:37,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:55:37,808 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:55:37,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-28 02:55:37,808 INFO L420 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:55:37,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:55:37,808 INFO L85 PathProgramCache]: Analyzing trace with hash 35733804, now seen corresponding path program 21 times [2024-06-28 02:55:37,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:55:37,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965896958] [2024-06-28 02:55:37,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:55:37,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:55:37,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:55:39,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:55:39,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:55:39,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965896958] [2024-06-28 02:55:39,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965896958] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:55:39,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:55:39,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:55:39,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892475104] [2024-06-28 02:55:39,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:55:39,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:55:39,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:55:39,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:55:39,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:55:39,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:55:39,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 207 transitions, 1864 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:39,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:55:39,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:55:39,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:55:39,874 INFO L124 PetriNetUnfolderBase]: 635/1257 cut-off events. [2024-06-28 02:55:39,874 INFO L125 PetriNetUnfolderBase]: For 330371/330371 co-relation queries the response was YES. [2024-06-28 02:55:39,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10445 conditions, 1257 events. 635/1257 cut-off events. For 330371/330371 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 7235 event pairs, 163 based on Foata normal form. 8/1263 useless extension candidates. Maximal degree in co-relation 10311. Up to 1175 conditions per place. [2024-06-28 02:55:39,888 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 195 selfloop transitions, 16 changer transitions 12/225 dead transitions. [2024-06-28 02:55:39,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 225 transitions, 2400 flow [2024-06-28 02:55:39,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:55:39,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:55:39,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-28 02:55:39,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 02:55:39,889 INFO L175 Difference]: Start difference. First operand has 309 places, 207 transitions, 1864 flow. Second operand 11 states and 121 transitions. [2024-06-28 02:55:39,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 225 transitions, 2400 flow [2024-06-28 02:55:40,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 225 transitions, 2356 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-28 02:55:40,900 INFO L231 Difference]: Finished difference. Result has 308 places, 204 transitions, 1822 flow [2024-06-28 02:55:40,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1820, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1822, PETRI_PLACES=308, PETRI_TRANSITIONS=204} [2024-06-28 02:55:40,901 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 278 predicate places. [2024-06-28 02:55:40,901 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 204 transitions, 1822 flow [2024-06-28 02:55:40,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:40,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:55:40,901 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:55:40,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-28 02:55:40,901 INFO L420 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:55:40,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:55:40,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1719799496, now seen corresponding path program 22 times [2024-06-28 02:55:40,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:55:40,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104945000] [2024-06-28 02:55:40,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:55:40,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:55:40,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:55:42,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:55:42,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:55:42,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104945000] [2024-06-28 02:55:42,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104945000] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:55:42,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:55:42,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:55:42,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541162723] [2024-06-28 02:55:42,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:55:42,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:55:42,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:55:42,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:55:42,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:55:42,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:55:42,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 204 transitions, 1822 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:42,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:55:42,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:55:42,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:55:42,670 INFO L124 PetriNetUnfolderBase]: 617/1219 cut-off events. [2024-06-28 02:55:42,670 INFO L125 PetriNetUnfolderBase]: For 296955/296955 co-relation queries the response was YES. [2024-06-28 02:55:42,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10276 conditions, 1219 events. 617/1219 cut-off events. For 296955/296955 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 6943 event pairs, 161 based on Foata normal form. 2/1219 useless extension candidates. Maximal degree in co-relation 10143. Up to 1173 conditions per place. [2024-06-28 02:55:42,684 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 200 selfloop transitions, 17 changer transitions 1/220 dead transitions. [2024-06-28 02:55:42,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 220 transitions, 2340 flow [2024-06-28 02:55:42,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:55:42,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:55:42,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-28 02:55:42,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34310850439882695 [2024-06-28 02:55:42,685 INFO L175 Difference]: Start difference. First operand has 308 places, 204 transitions, 1822 flow. Second operand 11 states and 117 transitions. [2024-06-28 02:55:42,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 220 transitions, 2340 flow [2024-06-28 02:55:43,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 220 transitions, 2302 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 02:55:43,857 INFO L231 Difference]: Finished difference. Result has 305 places, 205 transitions, 1862 flow [2024-06-28 02:55:43,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1784, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1862, PETRI_PLACES=305, PETRI_TRANSITIONS=205} [2024-06-28 02:55:43,858 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 275 predicate places. [2024-06-28 02:55:43,858 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 205 transitions, 1862 flow [2024-06-28 02:55:43,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:43,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:55:43,858 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:55:43,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-28 02:55:43,858 INFO L420 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:55:43,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:55:43,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1711747556, now seen corresponding path program 23 times [2024-06-28 02:55:43,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:55:43,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703622912] [2024-06-28 02:55:43,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:55:43,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:55:43,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:55:45,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:55:45,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:55:45,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703622912] [2024-06-28 02:55:45,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703622912] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:55:45,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:55:45,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:55:45,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935311284] [2024-06-28 02:55:45,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:55:45,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:55:45,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:55:45,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:55:45,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:55:45,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:55:45,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 205 transitions, 1862 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:45,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:55:45,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:55:45,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:55:45,782 INFO L124 PetriNetUnfolderBase]: 601/1187 cut-off events. [2024-06-28 02:55:45,782 INFO L125 PetriNetUnfolderBase]: For 292158/292158 co-relation queries the response was YES. [2024-06-28 02:55:45,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10163 conditions, 1187 events. 601/1187 cut-off events. For 292158/292158 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 6691 event pairs, 153 based on Foata normal form. 2/1187 useless extension candidates. Maximal degree in co-relation 10031. Up to 1127 conditions per place. [2024-06-28 02:55:45,792 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 200 selfloop transitions, 18 changer transitions 0/220 dead transitions. [2024-06-28 02:55:45,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 220 transitions, 2368 flow [2024-06-28 02:55:45,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:55:45,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:55:45,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-28 02:55:45,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34310850439882695 [2024-06-28 02:55:45,793 INFO L175 Difference]: Start difference. First operand has 305 places, 205 transitions, 1862 flow. Second operand 11 states and 117 transitions. [2024-06-28 02:55:45,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 220 transitions, 2368 flow [2024-06-28 02:55:46,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 220 transitions, 2302 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-28 02:55:46,791 INFO L231 Difference]: Finished difference. Result has 308 places, 206 transitions, 1874 flow [2024-06-28 02:55:46,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1796, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1874, PETRI_PLACES=308, PETRI_TRANSITIONS=206} [2024-06-28 02:55:46,791 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 278 predicate places. [2024-06-28 02:55:46,791 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 206 transitions, 1874 flow [2024-06-28 02:55:46,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:46,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:55:46,792 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:55:46,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-28 02:55:46,793 INFO L420 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:55:46,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:55:46,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1723444218, now seen corresponding path program 24 times [2024-06-28 02:55:46,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:55:46,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000046859] [2024-06-28 02:55:46,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:55:46,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:55:46,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:55:48,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:55:48,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:55:48,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000046859] [2024-06-28 02:55:48,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000046859] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:55:48,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:55:48,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:55:48,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481999290] [2024-06-28 02:55:48,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:55:48,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:55:48,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:55:48,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:55:48,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:55:48,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:55:48,160 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 206 transitions, 1874 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:48,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:55:48,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:55:48,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:55:48,665 INFO L124 PetriNetUnfolderBase]: 613/1215 cut-off events. [2024-06-28 02:55:48,665 INFO L125 PetriNetUnfolderBase]: For 330713/330713 co-relation queries the response was YES. [2024-06-28 02:55:48,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10316 conditions, 1215 events. 613/1215 cut-off events. For 330713/330713 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 6921 event pairs, 155 based on Foata normal form. 8/1221 useless extension candidates. Maximal degree in co-relation 10183. Up to 1137 conditions per place. [2024-06-28 02:55:48,679 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 194 selfloop transitions, 14 changer transitions 13/223 dead transitions. [2024-06-28 02:55:48,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 223 transitions, 2404 flow [2024-06-28 02:55:48,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:55:48,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:55:48,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-28 02:55:48,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3460410557184751 [2024-06-28 02:55:48,680 INFO L175 Difference]: Start difference. First operand has 308 places, 206 transitions, 1874 flow. Second operand 11 states and 118 transitions. [2024-06-28 02:55:48,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 223 transitions, 2404 flow [2024-06-28 02:55:49,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 223 transitions, 2306 flow, removed 18 selfloop flow, removed 10 redundant places. [2024-06-28 02:55:49,706 INFO L231 Difference]: Finished difference. Result has 309 places, 202 transitions, 1782 flow [2024-06-28 02:55:49,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1776, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1782, PETRI_PLACES=309, PETRI_TRANSITIONS=202} [2024-06-28 02:55:49,706 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 279 predicate places. [2024-06-28 02:55:49,706 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 202 transitions, 1782 flow [2024-06-28 02:55:49,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:49,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:55:49,707 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:55:49,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2024-06-28 02:55:49,707 INFO L420 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:55:49,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:55:49,707 INFO L85 PathProgramCache]: Analyzing trace with hash 36022104, now seen corresponding path program 25 times [2024-06-28 02:55:49,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:55:49,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213608801] [2024-06-28 02:55:49,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:55:49,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:55:49,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:55:51,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:55:51,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:55:51,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213608801] [2024-06-28 02:55:51,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213608801] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:55:51,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:55:51,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:55:51,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276876426] [2024-06-28 02:55:51,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:55:51,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:55:51,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:55:51,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:55:51,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:55:51,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:55:51,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 202 transitions, 1782 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:51,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:55:51,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:55:51,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:55:51,627 INFO L124 PetriNetUnfolderBase]: 601/1195 cut-off events. [2024-06-28 02:55:51,627 INFO L125 PetriNetUnfolderBase]: For 336108/336108 co-relation queries the response was YES. [2024-06-28 02:55:51,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10179 conditions, 1195 events. 601/1195 cut-off events. For 336108/336108 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 6789 event pairs, 153 based on Foata normal form. 8/1201 useless extension candidates. Maximal degree in co-relation 10046. Up to 1113 conditions per place. [2024-06-28 02:55:51,641 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 189 selfloop transitions, 14 changer transitions 15/220 dead transitions. [2024-06-28 02:55:51,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 220 transitions, 2310 flow [2024-06-28 02:55:51,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:55:51,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:55:51,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-28 02:55:51,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3519061583577713 [2024-06-28 02:55:51,642 INFO L175 Difference]: Start difference. First operand has 309 places, 202 transitions, 1782 flow. Second operand 11 states and 120 transitions. [2024-06-28 02:55:51,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 220 transitions, 2310 flow [2024-06-28 02:55:52,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 220 transitions, 2276 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 02:55:52,650 INFO L231 Difference]: Finished difference. Result has 305 places, 198 transitions, 1756 flow [2024-06-28 02:55:52,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1748, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1756, PETRI_PLACES=305, PETRI_TRANSITIONS=198} [2024-06-28 02:55:52,651 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 275 predicate places. [2024-06-28 02:55:52,651 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 198 transitions, 1756 flow [2024-06-28 02:55:52,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:52,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:55:52,651 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:55:52,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2024-06-28 02:55:52,651 INFO L420 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:55:52,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:55:52,652 INFO L85 PathProgramCache]: Analyzing trace with hash -355319000, now seen corresponding path program 30 times [2024-06-28 02:55:52,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:55:52,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360677171] [2024-06-28 02:55:52,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:55:52,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:55:52,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:55:54,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:55:54,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:55:54,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360677171] [2024-06-28 02:55:54,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360677171] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:55:54,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:55:54,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:55:54,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284208798] [2024-06-28 02:55:54,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:55:54,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:55:54,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:55:54,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:55:54,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:55:54,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:55:54,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 198 transitions, 1756 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:54,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:55:54,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:55:54,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:55:54,862 INFO L124 PetriNetUnfolderBase]: 601/1199 cut-off events. [2024-06-28 02:55:54,862 INFO L125 PetriNetUnfolderBase]: For 372581/372581 co-relation queries the response was YES. [2024-06-28 02:55:54,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10051 conditions, 1199 events. 601/1199 cut-off events. For 372581/372581 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 6834 event pairs, 157 based on Foata normal form. 16/1213 useless extension candidates. Maximal degree in co-relation 9920. Up to 1053 conditions per place. [2024-06-28 02:55:54,876 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 181 selfloop transitions, 20 changer transitions 16/219 dead transitions. [2024-06-28 02:55:54,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 219 transitions, 2274 flow [2024-06-28 02:55:54,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:55:54,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:55:54,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-28 02:55:54,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3629032258064516 [2024-06-28 02:55:54,877 INFO L175 Difference]: Start difference. First operand has 305 places, 198 transitions, 1756 flow. Second operand 12 states and 135 transitions. [2024-06-28 02:55:54,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 219 transitions, 2274 flow [2024-06-28 02:55:55,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 219 transitions, 2240 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-28 02:55:55,816 INFO L231 Difference]: Finished difference. Result has 301 places, 192 transitions, 1707 flow [2024-06-28 02:55:55,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1722, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1707, PETRI_PLACES=301, PETRI_TRANSITIONS=192} [2024-06-28 02:55:55,816 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 271 predicate places. [2024-06-28 02:55:55,816 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 192 transitions, 1707 flow [2024-06-28 02:55:55,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:55,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:55:55,816 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:55:55,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2024-06-28 02:55:55,817 INFO L420 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:55:55,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:55:55,817 INFO L85 PathProgramCache]: Analyzing trace with hash -118840026, now seen corresponding path program 26 times [2024-06-28 02:55:55,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:55:55,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078720909] [2024-06-28 02:55:55,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:55:55,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:55:55,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:55:57,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:55:57,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:55:57,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078720909] [2024-06-28 02:55:57,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078720909] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:55:57,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:55:57,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:55:57,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919528315] [2024-06-28 02:55:57,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:55:57,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:55:57,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:55:57,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:55:57,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:55:57,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:55:57,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 192 transitions, 1707 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:57,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:55:57,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:55:57,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:55:57,820 INFO L124 PetriNetUnfolderBase]: 563/1121 cut-off events. [2024-06-28 02:55:57,820 INFO L125 PetriNetUnfolderBase]: For 281133/281133 co-relation queries the response was YES. [2024-06-28 02:55:57,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9709 conditions, 1121 events. 563/1121 cut-off events. For 281133/281133 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 6270 event pairs, 147 based on Foata normal form. 2/1121 useless extension candidates. Maximal degree in co-relation 9580. Up to 1075 conditions per place. [2024-06-28 02:55:57,831 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 189 selfloop transitions, 16 changer transitions 0/207 dead transitions. [2024-06-28 02:55:57,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 207 transitions, 2187 flow [2024-06-28 02:55:57,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:55:57,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:55:57,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-28 02:55:57,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33724340175953077 [2024-06-28 02:55:57,832 INFO L175 Difference]: Start difference. First operand has 301 places, 192 transitions, 1707 flow. Second operand 11 states and 115 transitions. [2024-06-28 02:55:57,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 207 transitions, 2187 flow [2024-06-28 02:55:58,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 207 transitions, 2139 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-28 02:55:58,695 INFO L231 Difference]: Finished difference. Result has 294 places, 193 transitions, 1735 flow [2024-06-28 02:55:58,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1659, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1735, PETRI_PLACES=294, PETRI_TRANSITIONS=193} [2024-06-28 02:55:58,695 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 264 predicate places. [2024-06-28 02:55:58,695 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 193 transitions, 1735 flow [2024-06-28 02:55:58,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:55:58,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:55:58,696 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:55:58,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2024-06-28 02:55:58,696 INFO L420 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:55:58,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:55:58,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1015185882, now seen corresponding path program 27 times [2024-06-28 02:55:58,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:55:58,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084189860] [2024-06-28 02:55:58,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:55:58,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:55:58,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:56:00,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:56:00,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:56:00,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084189860] [2024-06-28 02:56:00,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084189860] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:56:00,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:56:00,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:56:00,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182647934] [2024-06-28 02:56:00,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:56:00,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:56:00,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:56:00,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:56:00,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:56:00,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:56:00,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 193 transitions, 1735 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:00,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:56:00,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:56:00,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:56:00,536 INFO L124 PetriNetUnfolderBase]: 583/1165 cut-off events. [2024-06-28 02:56:00,536 INFO L125 PetriNetUnfolderBase]: For 319895/319895 co-relation queries the response was YES. [2024-06-28 02:56:00,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9790 conditions, 1165 events. 583/1165 cut-off events. For 319895/319895 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 6621 event pairs, 147 based on Foata normal form. 12/1175 useless extension candidates. Maximal degree in co-relation 9664. Up to 1036 conditions per place. [2024-06-28 02:56:00,547 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 177 selfloop transitions, 27 changer transitions 7/213 dead transitions. [2024-06-28 02:56:00,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 213 transitions, 2275 flow [2024-06-28 02:56:00,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:56:00,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:56:00,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-28 02:56:00,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375366568914956 [2024-06-28 02:56:00,548 INFO L175 Difference]: Start difference. First operand has 294 places, 193 transitions, 1735 flow. Second operand 11 states and 128 transitions. [2024-06-28 02:56:00,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 213 transitions, 2275 flow [2024-06-28 02:56:01,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 213 transitions, 2209 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-28 02:56:01,357 INFO L231 Difference]: Finished difference. Result has 296 places, 191 transitions, 1747 flow [2024-06-28 02:56:01,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1669, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1747, PETRI_PLACES=296, PETRI_TRANSITIONS=191} [2024-06-28 02:56:01,358 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 266 predicate places. [2024-06-28 02:56:01,358 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 191 transitions, 1747 flow [2024-06-28 02:56:01,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:01,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:56:01,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:56:01,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2024-06-28 02:56:01,358 INFO L420 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:56:01,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:56:01,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1015192826, now seen corresponding path program 31 times [2024-06-28 02:56:01,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:56:01,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176047359] [2024-06-28 02:56:01,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:56:01,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:56:01,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:56:03,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:56:03,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:56:03,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176047359] [2024-06-28 02:56:03,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176047359] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:56:03,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:56:03,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:56:03,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177761772] [2024-06-28 02:56:03,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:56:03,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:56:03,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:56:03,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:56:03,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:56:03,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:56:03,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 191 transitions, 1747 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:03,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:56:03,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:56:03,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:56:03,781 INFO L124 PetriNetUnfolderBase]: 583/1173 cut-off events. [2024-06-28 02:56:03,782 INFO L125 PetriNetUnfolderBase]: For 343899/343899 co-relation queries the response was YES. [2024-06-28 02:56:03,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9821 conditions, 1173 events. 583/1173 cut-off events. For 343899/343899 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 6696 event pairs, 157 based on Foata normal form. 16/1187 useless extension candidates. Maximal degree in co-relation 9694. Up to 1037 conditions per place. [2024-06-28 02:56:03,793 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 174 selfloop transitions, 20 changer transitions 16/212 dead transitions. [2024-06-28 02:56:03,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 212 transitions, 2251 flow [2024-06-28 02:56:03,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:56:03,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:56:03,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-28 02:56:03,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3655913978494624 [2024-06-28 02:56:03,794 INFO L175 Difference]: Start difference. First operand has 296 places, 191 transitions, 1747 flow. Second operand 12 states and 136 transitions. [2024-06-28 02:56:03,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 212 transitions, 2251 flow [2024-06-28 02:56:04,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 212 transitions, 2159 flow, removed 20 selfloop flow, removed 10 redundant places. [2024-06-28 02:56:04,759 INFO L231 Difference]: Finished difference. Result has 297 places, 185 transitions, 1647 flow [2024-06-28 02:56:04,759 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1655, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1647, PETRI_PLACES=297, PETRI_TRANSITIONS=185} [2024-06-28 02:56:04,760 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 267 predicate places. [2024-06-28 02:56:04,760 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 185 transitions, 1647 flow [2024-06-28 02:56:04,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:04,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:56:04,760 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:56:04,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2024-06-28 02:56:04,760 INFO L420 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:56:04,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:56:04,761 INFO L85 PathProgramCache]: Analyzing trace with hash 461268228, now seen corresponding path program 28 times [2024-06-28 02:56:04,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:56:04,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127302187] [2024-06-28 02:56:04,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:56:04,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:56:04,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:56:05,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:56:05,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:56:05,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127302187] [2024-06-28 02:56:05,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127302187] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:56:05,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:56:05,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:56:05,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441694003] [2024-06-28 02:56:05,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:56:05,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:56:05,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:56:05,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:56:05,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:56:06,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:56:06,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 185 transitions, 1647 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:06,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:56:06,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:56:06,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:56:06,470 INFO L124 PetriNetUnfolderBase]: 553/1115 cut-off events. [2024-06-28 02:56:06,470 INFO L125 PetriNetUnfolderBase]: For 300341/300341 co-relation queries the response was YES. [2024-06-28 02:56:06,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9557 conditions, 1115 events. 553/1115 cut-off events. For 300341/300341 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 6273 event pairs, 147 based on Foata normal form. 8/1121 useless extension candidates. Maximal degree in co-relation 9430. Up to 1040 conditions per place. [2024-06-28 02:56:06,481 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 174 selfloop transitions, 11 changer transitions 15/202 dead transitions. [2024-06-28 02:56:06,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 202 transitions, 2137 flow [2024-06-28 02:56:06,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:56:06,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:56:06,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-28 02:56:06,482 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34017595307917886 [2024-06-28 02:56:06,482 INFO L175 Difference]: Start difference. First operand has 297 places, 185 transitions, 1647 flow. Second operand 11 states and 116 transitions. [2024-06-28 02:56:06,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 202 transitions, 2137 flow [2024-06-28 02:56:07,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 202 transitions, 2085 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-28 02:56:07,293 INFO L231 Difference]: Finished difference. Result has 290 places, 181 transitions, 1603 flow [2024-06-28 02:56:07,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1597, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1603, PETRI_PLACES=290, PETRI_TRANSITIONS=181} [2024-06-28 02:56:07,294 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 260 predicate places. [2024-06-28 02:56:07,294 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 181 transitions, 1603 flow [2024-06-28 02:56:07,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:07,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:56:07,294 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:56:07,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2024-06-28 02:56:07,294 INFO L420 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:56:07,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:56:07,295 INFO L85 PathProgramCache]: Analyzing trace with hash -777982356, now seen corresponding path program 32 times [2024-06-28 02:56:07,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:56:07,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159731720] [2024-06-28 02:56:07,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:56:07,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:56:07,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:56:08,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:56:08,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:56:08,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159731720] [2024-06-28 02:56:08,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159731720] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:56:08,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:56:08,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:56:08,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673164962] [2024-06-28 02:56:08,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:56:08,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:56:08,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:56:08,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:56:08,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:56:08,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:56:08,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 181 transitions, 1603 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:08,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:56:08,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:56:08,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:56:09,430 INFO L124 PetriNetUnfolderBase]: 539/1089 cut-off events. [2024-06-28 02:56:09,430 INFO L125 PetriNetUnfolderBase]: For 285281/285281 co-relation queries the response was YES. [2024-06-28 02:56:09,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9236 conditions, 1089 events. 539/1089 cut-off events. For 285281/285281 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 6093 event pairs, 139 based on Foata normal form. 8/1095 useless extension candidates. Maximal degree in co-relation 9112. Up to 971 conditions per place. [2024-06-28 02:56:09,442 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 165 selfloop transitions, 21 changer transitions 12/200 dead transitions. [2024-06-28 02:56:09,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 200 transitions, 2061 flow [2024-06-28 02:56:09,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:56:09,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:56:09,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-28 02:56:09,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34946236559139787 [2024-06-28 02:56:09,443 INFO L175 Difference]: Start difference. First operand has 290 places, 181 transitions, 1603 flow. Second operand 12 states and 130 transitions. [2024-06-28 02:56:09,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 200 transitions, 2061 flow [2024-06-28 02:56:10,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 200 transitions, 2031 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-28 02:56:10,188 INFO L231 Difference]: Finished difference. Result has 285 places, 177 transitions, 1578 flow [2024-06-28 02:56:10,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1573, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1578, PETRI_PLACES=285, PETRI_TRANSITIONS=177} [2024-06-28 02:56:10,189 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 255 predicate places. [2024-06-28 02:56:10,189 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 177 transitions, 1578 flow [2024-06-28 02:56:10,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:10,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:56:10,189 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:56:10,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2024-06-28 02:56:10,189 INFO L420 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:56:10,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:56:10,189 INFO L85 PathProgramCache]: Analyzing trace with hash -193963176, now seen corresponding path program 29 times [2024-06-28 02:56:10,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:56:10,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251471109] [2024-06-28 02:56:10,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:56:10,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:56:10,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:56:12,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:56:12,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:56:12,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251471109] [2024-06-28 02:56:12,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251471109] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:56:12,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:56:12,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:56:12,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722802466] [2024-06-28 02:56:12,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:56:12,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:56:12,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:56:12,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:56:12,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:56:12,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:56:12,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 177 transitions, 1578 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:12,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:56:12,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:56:12,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:56:12,774 INFO L124 PetriNetUnfolderBase]: 523/1053 cut-off events. [2024-06-28 02:56:12,774 INFO L125 PetriNetUnfolderBase]: For 240615/240615 co-relation queries the response was YES. [2024-06-28 02:56:12,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9051 conditions, 1053 events. 523/1053 cut-off events. For 240615/240615 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 5808 event pairs, 143 based on Foata normal form. 2/1053 useless extension candidates. Maximal degree in co-relation 8930. Up to 986 conditions per place. [2024-06-28 02:56:12,785 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 168 selfloop transitions, 23 changer transitions 0/193 dead transitions. [2024-06-28 02:56:12,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 193 transitions, 2040 flow [2024-06-28 02:56:12,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:56:12,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:56:12,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-28 02:56:12,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36070381231671556 [2024-06-28 02:56:12,786 INFO L175 Difference]: Start difference. First operand has 285 places, 177 transitions, 1578 flow. Second operand 11 states and 123 transitions. [2024-06-28 02:56:12,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 193 transitions, 2040 flow [2024-06-28 02:56:13,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 193 transitions, 1979 flow, removed 3 selfloop flow, removed 14 redundant places. [2024-06-28 02:56:13,537 INFO L231 Difference]: Finished difference. Result has 277 places, 178 transitions, 1609 flow [2024-06-28 02:56:13,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1517, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1609, PETRI_PLACES=277, PETRI_TRANSITIONS=178} [2024-06-28 02:56:13,538 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 247 predicate places. [2024-06-28 02:56:13,538 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 178 transitions, 1609 flow [2024-06-28 02:56:13,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:13,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:56:13,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:56:13,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2024-06-28 02:56:13,538 INFO L420 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:56:13,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:56:13,539 INFO L85 PathProgramCache]: Analyzing trace with hash -200634500, now seen corresponding path program 33 times [2024-06-28 02:56:13,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:56:13,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888316676] [2024-06-28 02:56:13,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:56:13,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:56:13,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:56:14,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:56:14,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:56:14,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888316676] [2024-06-28 02:56:14,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888316676] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:56:14,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:56:14,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:56:14,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655486547] [2024-06-28 02:56:14,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:56:14,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:56:14,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:56:14,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:56:14,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:56:14,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:56:14,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 178 transitions, 1609 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:14,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:56:14,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:56:14,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:56:15,443 INFO L124 PetriNetUnfolderBase]: 579/1173 cut-off events. [2024-06-28 02:56:15,443 INFO L125 PetriNetUnfolderBase]: For 330019/330019 co-relation queries the response was YES. [2024-06-28 02:56:15,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10907 conditions, 1173 events. 579/1173 cut-off events. For 330019/330019 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 6691 event pairs, 169 based on Foata normal form. 8/1179 useless extension candidates. Maximal degree in co-relation 10790. Up to 966 conditions per place. [2024-06-28 02:56:15,455 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 171 selfloop transitions, 19 changer transitions 9/201 dead transitions. [2024-06-28 02:56:15,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 201 transitions, 2301 flow [2024-06-28 02:56:15,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:56:15,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:56:15,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-28 02:56:15,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3782991202346041 [2024-06-28 02:56:15,456 INFO L175 Difference]: Start difference. First operand has 277 places, 178 transitions, 1609 flow. Second operand 11 states and 129 transitions. [2024-06-28 02:56:15,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 201 transitions, 2301 flow [2024-06-28 02:56:16,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 201 transitions, 2219 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-28 02:56:16,336 INFO L231 Difference]: Finished difference. Result has 279 places, 174 transitions, 1537 flow [2024-06-28 02:56:16,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1527, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1537, PETRI_PLACES=279, PETRI_TRANSITIONS=174} [2024-06-28 02:56:16,337 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 249 predicate places. [2024-06-28 02:56:16,337 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 174 transitions, 1537 flow [2024-06-28 02:56:16,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:16,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:56:16,337 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:56:16,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2024-06-28 02:56:16,337 INFO L420 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:56:16,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:56:16,338 INFO L85 PathProgramCache]: Analyzing trace with hash -194200760, now seen corresponding path program 34 times [2024-06-28 02:56:16,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:56:16,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052269228] [2024-06-28 02:56:16,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:56:16,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:56:16,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:56:17,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:56:17,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:56:17,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052269228] [2024-06-28 02:56:17,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052269228] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:56:17,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:56:17,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:56:17,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496239011] [2024-06-28 02:56:17,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:56:17,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:56:17,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:56:17,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:56:17,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:56:18,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:56:18,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 174 transitions, 1537 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:18,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:56:18,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:56:18,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:56:18,606 INFO L124 PetriNetUnfolderBase]: 539/1093 cut-off events. [2024-06-28 02:56:18,606 INFO L125 PetriNetUnfolderBase]: For 300839/300839 co-relation queries the response was YES. [2024-06-28 02:56:18,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9052 conditions, 1093 events. 539/1093 cut-off events. For 300839/300839 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 6132 event pairs, 153 based on Foata normal form. 16/1107 useless extension candidates. Maximal degree in co-relation 8934. Up to 966 conditions per place. [2024-06-28 02:56:18,617 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 160 selfloop transitions, 16 changer transitions 16/194 dead transitions. [2024-06-28 02:56:18,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 194 transitions, 2001 flow [2024-06-28 02:56:18,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:56:18,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:56:18,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-28 02:56:18,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 02:56:18,618 INFO L175 Difference]: Start difference. First operand has 279 places, 174 transitions, 1537 flow. Second operand 12 states and 132 transitions. [2024-06-28 02:56:18,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 194 transitions, 2001 flow [2024-06-28 02:56:19,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 194 transitions, 1962 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 02:56:19,273 INFO L231 Difference]: Finished difference. Result has 277 places, 168 transitions, 1480 flow [2024-06-28 02:56:19,273 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1498, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1480, PETRI_PLACES=277, PETRI_TRANSITIONS=168} [2024-06-28 02:56:19,273 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 247 predicate places. [2024-06-28 02:56:19,273 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 168 transitions, 1480 flow [2024-06-28 02:56:19,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:19,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:56:19,273 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:56:19,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2024-06-28 02:56:19,274 INFO L420 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:56:19,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:56:19,274 INFO L85 PathProgramCache]: Analyzing trace with hash -193954806, now seen corresponding path program 30 times [2024-06-28 02:56:19,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:56:19,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223583026] [2024-06-28 02:56:19,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:56:19,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:56:19,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:56:21,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:56:21,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:56:21,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223583026] [2024-06-28 02:56:21,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223583026] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:56:21,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:56:21,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:56:21,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470918532] [2024-06-28 02:56:21,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:56:21,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:56:21,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:56:21,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:56:21,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:56:21,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:56:21,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 168 transitions, 1480 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:21,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:56:21,271 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:56:21,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:56:21,699 INFO L124 PetriNetUnfolderBase]: 499/1013 cut-off events. [2024-06-28 02:56:21,699 INFO L125 PetriNetUnfolderBase]: For 231047/231047 co-relation queries the response was YES. [2024-06-28 02:56:21,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8743 conditions, 1013 events. 499/1013 cut-off events. For 231047/231047 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 5562 event pairs, 141 based on Foata normal form. 2/1013 useless extension candidates. Maximal degree in co-relation 8626. Up to 960 conditions per place. [2024-06-28 02:56:21,710 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 163 selfloop transitions, 18 changer transitions 0/183 dead transitions. [2024-06-28 02:56:21,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 183 transitions, 1918 flow [2024-06-28 02:56:21,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:56:21,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:56:21,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-28 02:56:21,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34017595307917886 [2024-06-28 02:56:21,711 INFO L175 Difference]: Start difference. First operand has 277 places, 168 transitions, 1480 flow. Second operand 11 states and 116 transitions. [2024-06-28 02:56:21,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 183 transitions, 1918 flow [2024-06-28 02:56:22,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 183 transitions, 1874 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-28 02:56:22,352 INFO L231 Difference]: Finished difference. Result has 269 places, 169 transitions, 1520 flow [2024-06-28 02:56:22,352 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1438, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1520, PETRI_PLACES=269, PETRI_TRANSITIONS=169} [2024-06-28 02:56:22,352 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 239 predicate places. [2024-06-28 02:56:22,352 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 169 transitions, 1520 flow [2024-06-28 02:56:22,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:22,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:56:22,353 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:56:22,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2024-06-28 02:56:22,353 INFO L420 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:56:22,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:56:22,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1917604340, now seen corresponding path program 31 times [2024-06-28 02:56:22,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:56:22,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713860975] [2024-06-28 02:56:22,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:56:22,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:56:22,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:56:24,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:56:24,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:56:24,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713860975] [2024-06-28 02:56:24,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713860975] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:56:24,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:56:24,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:56:24,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994990612] [2024-06-28 02:56:24,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:56:24,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:56:24,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:56:24,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:56:24,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:56:24,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:56:24,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 169 transitions, 1520 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:24,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:56:24,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:56:24,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:56:24,715 INFO L124 PetriNetUnfolderBase]: 503/1021 cut-off events. [2024-06-28 02:56:24,716 INFO L125 PetriNetUnfolderBase]: For 217673/217673 co-relation queries the response was YES. [2024-06-28 02:56:24,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8700 conditions, 1021 events. 503/1021 cut-off events. For 217673/217673 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 5629 event pairs, 133 based on Foata normal form. 2/1021 useless extension candidates. Maximal degree in co-relation 8586. Up to 902 conditions per place. [2024-06-28 02:56:24,724 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 150 selfloop transitions, 34 changer transitions 0/186 dead transitions. [2024-06-28 02:56:24,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 186 transitions, 1974 flow [2024-06-28 02:56:24,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:56:24,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:56:24,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-28 02:56:24,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375366568914956 [2024-06-28 02:56:24,725 INFO L175 Difference]: Start difference. First operand has 269 places, 169 transitions, 1520 flow. Second operand 11 states and 128 transitions. [2024-06-28 02:56:24,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 186 transitions, 1974 flow [2024-06-28 02:56:25,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 186 transitions, 1902 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-28 02:56:25,345 INFO L231 Difference]: Finished difference. Result has 271 places, 170 transitions, 1564 flow [2024-06-28 02:56:25,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1448, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1564, PETRI_PLACES=271, PETRI_TRANSITIONS=170} [2024-06-28 02:56:25,345 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 241 predicate places. [2024-06-28 02:56:25,345 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 170 transitions, 1564 flow [2024-06-28 02:56:25,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:25,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:56:25,345 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:56:25,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2024-06-28 02:56:25,345 INFO L420 AbstractCegarLoop]: === Iteration 205 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:56:25,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:56:25,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1562442426, now seen corresponding path program 35 times [2024-06-28 02:56:25,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:56:25,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949624121] [2024-06-28 02:56:25,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:56:25,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:56:25,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:56:26,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:56:26,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:56:26,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949624121] [2024-06-28 02:56:26,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949624121] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:56:26,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:56:26,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:56:26,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420538267] [2024-06-28 02:56:26,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:56:26,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:56:26,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:56:26,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:56:26,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:56:26,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:56:26,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 170 transitions, 1564 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:26,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:56:26,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:56:26,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:56:27,500 INFO L124 PetriNetUnfolderBase]: 544/1108 cut-off events. [2024-06-28 02:56:27,500 INFO L125 PetriNetUnfolderBase]: For 292883/292883 co-relation queries the response was YES. [2024-06-28 02:56:27,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9971 conditions, 1108 events. 544/1108 cut-off events. For 292883/292883 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 6249 event pairs, 146 based on Foata normal form. 8/1114 useless extension candidates. Maximal degree in co-relation 9856. Up to 855 conditions per place. [2024-06-28 02:56:27,512 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 149 selfloop transitions, 38 changer transitions 7/196 dead transitions. [2024-06-28 02:56:27,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 196 transitions, 2252 flow [2024-06-28 02:56:27,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:56:27,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:56:27,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-28 02:56:27,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3897849462365591 [2024-06-28 02:56:27,513 INFO L175 Difference]: Start difference. First operand has 271 places, 170 transitions, 1564 flow. Second operand 12 states and 145 transitions. [2024-06-28 02:56:27,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 196 transitions, 2252 flow [2024-06-28 02:56:28,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 196 transitions, 2126 flow, removed 20 selfloop flow, removed 10 redundant places. [2024-06-28 02:56:28,226 INFO L231 Difference]: Finished difference. Result has 273 places, 168 transitions, 1502 flow [2024-06-28 02:56:28,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1438, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1502, PETRI_PLACES=273, PETRI_TRANSITIONS=168} [2024-06-28 02:56:28,227 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 243 predicate places. [2024-06-28 02:56:28,227 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 168 transitions, 1502 flow [2024-06-28 02:56:28,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:28,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:56:28,227 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:56:28,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2024-06-28 02:56:28,227 INFO L420 AbstractCegarLoop]: === Iteration 206 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:56:28,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:56:28,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1917611284, now seen corresponding path program 36 times [2024-06-28 02:56:28,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:56:28,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124267884] [2024-06-28 02:56:28,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:56:28,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:56:28,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:56:29,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:56:29,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:56:29,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124267884] [2024-06-28 02:56:29,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124267884] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:56:29,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:56:29,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:56:29,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597315729] [2024-06-28 02:56:29,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:56:29,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:56:29,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:56:29,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:56:29,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:56:29,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:56:29,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 168 transitions, 1502 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:29,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:56:29,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:56:29,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:56:30,561 INFO L124 PetriNetUnfolderBase]: 542/1106 cut-off events. [2024-06-28 02:56:30,561 INFO L125 PetriNetUnfolderBase]: For 307783/307783 co-relation queries the response was YES. [2024-06-28 02:56:30,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9954 conditions, 1106 events. 542/1106 cut-off events. For 307783/307783 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 6246 event pairs, 156 based on Foata normal form. 10/1114 useless extension candidates. Maximal degree in co-relation 9838. Up to 889 conditions per place. [2024-06-28 02:56:30,572 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 138 selfloop transitions, 37 changer transitions 11/188 dead transitions. [2024-06-28 02:56:30,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 188 transitions, 1956 flow [2024-06-28 02:56:30,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:56:30,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:56:30,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-28 02:56:30,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39589442815249265 [2024-06-28 02:56:30,573 INFO L175 Difference]: Start difference. First operand has 273 places, 168 transitions, 1502 flow. Second operand 11 states and 135 transitions. [2024-06-28 02:56:30,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 188 transitions, 1956 flow [2024-06-28 02:56:31,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 188 transitions, 1891 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 02:56:31,286 INFO L231 Difference]: Finished difference. Result has 272 places, 161 transitions, 1448 flow [2024-06-28 02:56:31,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1437, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1448, PETRI_PLACES=272, PETRI_TRANSITIONS=161} [2024-06-28 02:56:31,287 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 242 predicate places. [2024-06-28 02:56:31,287 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 161 transitions, 1448 flow [2024-06-28 02:56:31,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:31,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:56:31,287 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:56:31,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2024-06-28 02:56:31,288 INFO L420 AbstractCegarLoop]: === Iteration 207 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:56:31,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:56:31,288 INFO L85 PathProgramCache]: Analyzing trace with hash -2083845064, now seen corresponding path program 37 times [2024-06-28 02:56:31,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:56:31,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93244887] [2024-06-28 02:56:31,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:56:31,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:56:31,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:56:32,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:56:32,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:56:32,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93244887] [2024-06-28 02:56:32,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93244887] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:56:32,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:56:32,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:56:32,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562228637] [2024-06-28 02:56:32,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:56:32,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:56:32,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:56:32,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:56:32,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:56:32,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:56:32,942 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 161 transitions, 1448 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:32,942 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:56:32,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:56:32,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:56:33,529 INFO L124 PetriNetUnfolderBase]: 516/1064 cut-off events. [2024-06-28 02:56:33,529 INFO L125 PetriNetUnfolderBase]: For 292107/292107 co-relation queries the response was YES. [2024-06-28 02:56:33,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9497 conditions, 1064 events. 516/1064 cut-off events. For 292107/292107 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 6007 event pairs, 153 based on Foata normal form. 10/1072 useless extension candidates. Maximal degree in co-relation 9382. Up to 864 conditions per place. [2024-06-28 02:56:33,539 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 132 selfloop transitions, 35 changer transitions 11/180 dead transitions. [2024-06-28 02:56:33,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 180 transitions, 1882 flow [2024-06-28 02:56:33,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:56:33,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:56:33,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-28 02:56:33,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-28 02:56:33,540 INFO L175 Difference]: Start difference. First operand has 272 places, 161 transitions, 1448 flow. Second operand 11 states and 132 transitions. [2024-06-28 02:56:33,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 180 transitions, 1882 flow [2024-06-28 02:56:34,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 180 transitions, 1797 flow, removed 2 selfloop flow, removed 14 redundant places. [2024-06-28 02:56:34,203 INFO L231 Difference]: Finished difference. Result has 267 places, 154 transitions, 1382 flow [2024-06-28 02:56:34,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1363, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1382, PETRI_PLACES=267, PETRI_TRANSITIONS=154} [2024-06-28 02:56:34,203 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 237 predicate places. [2024-06-28 02:56:34,204 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 154 transitions, 1382 flow [2024-06-28 02:56:34,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:34,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:56:34,204 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:56:34,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2024-06-28 02:56:34,204 INFO L420 AbstractCegarLoop]: === Iteration 208 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:56:34,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:56:34,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1911117590, now seen corresponding path program 32 times [2024-06-28 02:56:34,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:56:34,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744734032] [2024-06-28 02:56:34,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:56:34,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:56:34,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:56:35,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:56:35,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:56:35,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744734032] [2024-06-28 02:56:35,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744734032] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:56:35,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:56:35,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:56:35,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443098325] [2024-06-28 02:56:35,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:56:35,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:56:35,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:56:35,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:56:35,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:56:35,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:56:35,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 154 transitions, 1382 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:35,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:56:35,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:56:35,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:56:36,281 INFO L124 PetriNetUnfolderBase]: 484/1008 cut-off events. [2024-06-28 02:56:36,281 INFO L125 PetriNetUnfolderBase]: For 251845/251845 co-relation queries the response was YES. [2024-06-28 02:56:36,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9258 conditions, 1008 events. 484/1008 cut-off events. For 251845/251845 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 5644 event pairs, 151 based on Foata normal form. 2/1008 useless extension candidates. Maximal degree in co-relation 9144. Up to 872 conditions per place. [2024-06-28 02:56:36,291 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 134 selfloop transitions, 35 changer transitions 0/171 dead transitions. [2024-06-28 02:56:36,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 171 transitions, 1808 flow [2024-06-28 02:56:36,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:56:36,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:56:36,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-28 02:56:36,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375366568914956 [2024-06-28 02:56:36,293 INFO L175 Difference]: Start difference. First operand has 267 places, 154 transitions, 1382 flow. Second operand 11 states and 128 transitions. [2024-06-28 02:56:36,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 171 transitions, 1808 flow [2024-06-28 02:56:36,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 171 transitions, 1723 flow, removed 2 selfloop flow, removed 14 redundant places. [2024-06-28 02:56:36,953 INFO L231 Difference]: Finished difference. Result has 263 places, 155 transitions, 1417 flow [2024-06-28 02:56:36,953 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1297, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1417, PETRI_PLACES=263, PETRI_TRANSITIONS=155} [2024-06-28 02:56:36,954 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 233 predicate places. [2024-06-28 02:56:36,954 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 155 transitions, 1417 flow [2024-06-28 02:56:36,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:36,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:56:36,954 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:56:36,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2024-06-28 02:56:36,954 INFO L420 AbstractCegarLoop]: === Iteration 209 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:56:36,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:56:36,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1396208646, now seen corresponding path program 38 times [2024-06-28 02:56:36,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:56:36,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44720091] [2024-06-28 02:56:36,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:56:36,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:56:36,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:56:38,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:56:38,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:56:38,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44720091] [2024-06-28 02:56:38,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44720091] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:56:38,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:56:38,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:56:38,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735913220] [2024-06-28 02:56:38,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:56:38,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:56:38,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:56:38,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:56:38,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:56:38,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:56:38,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 155 transitions, 1417 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:38,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:56:38,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:56:38,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:56:38,969 INFO L124 PetriNetUnfolderBase]: 496/1036 cut-off events. [2024-06-28 02:56:38,969 INFO L125 PetriNetUnfolderBase]: For 271832/271832 co-relation queries the response was YES. [2024-06-28 02:56:38,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9283 conditions, 1036 events. 496/1036 cut-off events. For 271832/271832 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 5881 event pairs, 151 based on Foata normal form. 8/1042 useless extension candidates. Maximal degree in co-relation 9170. Up to 882 conditions per place. [2024-06-28 02:56:38,980 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 132 selfloop transitions, 30 changer transitions 11/175 dead transitions. [2024-06-28 02:56:38,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 175 transitions, 1829 flow [2024-06-28 02:56:38,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:56:38,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:56:38,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-28 02:56:38,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3655913978494624 [2024-06-28 02:56:38,981 INFO L175 Difference]: Start difference. First operand has 263 places, 155 transitions, 1417 flow. Second operand 12 states and 136 transitions. [2024-06-28 02:56:38,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 175 transitions, 1829 flow [2024-06-28 02:56:39,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 175 transitions, 1719 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-28 02:56:39,571 INFO L231 Difference]: Finished difference. Result has 266 places, 152 transitions, 1349 flow [2024-06-28 02:56:39,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1307, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1349, PETRI_PLACES=266, PETRI_TRANSITIONS=152} [2024-06-28 02:56:39,571 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 236 predicate places. [2024-06-28 02:56:39,571 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 152 transitions, 1349 flow [2024-06-28 02:56:39,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:39,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:56:39,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:56:39,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2024-06-28 02:56:39,572 INFO L420 AbstractCegarLoop]: === Iteration 210 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:56:39,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:56:39,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1569122120, now seen corresponding path program 33 times [2024-06-28 02:56:39,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:56:39,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357797985] [2024-06-28 02:56:39,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:56:39,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:56:39,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:56:40,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:56:40,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:56:40,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357797985] [2024-06-28 02:56:40,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357797985] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:56:40,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:56:40,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:56:40,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077405067] [2024-06-28 02:56:40,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:56:40,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:56:40,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:56:40,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:56:40,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:56:40,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:56:40,949 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 152 transitions, 1349 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:40,949 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:56:40,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:56:40,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:56:41,288 INFO L124 PetriNetUnfolderBase]: 474/990 cut-off events. [2024-06-28 02:56:41,288 INFO L125 PetriNetUnfolderBase]: For 242129/242129 co-relation queries the response was YES. [2024-06-28 02:56:41,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8870 conditions, 990 events. 474/990 cut-off events. For 242129/242129 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 5535 event pairs, 152 based on Foata normal form. 2/990 useless extension candidates. Maximal degree in co-relation 8756. Up to 845 conditions per place. [2024-06-28 02:56:41,299 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 131 selfloop transitions, 34 changer transitions 0/167 dead transitions. [2024-06-28 02:56:41,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 167 transitions, 1717 flow [2024-06-28 02:56:41,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:56:41,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:56:41,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-28 02:56:41,300 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36656891495601174 [2024-06-28 02:56:41,300 INFO L175 Difference]: Start difference. First operand has 266 places, 152 transitions, 1349 flow. Second operand 11 states and 125 transitions. [2024-06-28 02:56:41,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 167 transitions, 1717 flow [2024-06-28 02:56:41,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 167 transitions, 1653 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 02:56:42,001 INFO L231 Difference]: Finished difference. Result has 262 places, 152 transitions, 1357 flow [2024-06-28 02:56:42,001 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1285, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1357, PETRI_PLACES=262, PETRI_TRANSITIONS=152} [2024-06-28 02:56:42,001 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 232 predicate places. [2024-06-28 02:56:42,001 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 152 transitions, 1357 flow [2024-06-28 02:56:42,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:42,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:56:42,001 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:56:42,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2024-06-28 02:56:42,001 INFO L420 AbstractCegarLoop]: === Iteration 211 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:56:42,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:56:42,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1391739996, now seen corresponding path program 39 times [2024-06-28 02:56:42,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:56:42,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486677565] [2024-06-28 02:56:42,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:56:42,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:56:42,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:56:43,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:56:43,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:56:43,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486677565] [2024-06-28 02:56:43,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486677565] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:56:43,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:56:43,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 02:56:43,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285153564] [2024-06-28 02:56:43,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:56:43,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 02:56:43,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:56:43,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 02:56:43,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 02:56:43,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:56:43,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 152 transitions, 1357 flow. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:43,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:56:43,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:56:43,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:56:43,630 INFO L124 PetriNetUnfolderBase]: 479/1005 cut-off events. [2024-06-28 02:56:43,630 INFO L125 PetriNetUnfolderBase]: For 253565/253565 co-relation queries the response was YES. [2024-06-28 02:56:43,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8701 conditions, 1005 events. 479/1005 cut-off events. For 253565/253565 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 5660 event pairs, 143 based on Foata normal form. 8/1011 useless extension candidates. Maximal degree in co-relation 8588. Up to 797 conditions per place. [2024-06-28 02:56:43,640 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 133 selfloop transitions, 30 changer transitions 9/174 dead transitions. [2024-06-28 02:56:43,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 174 transitions, 1971 flow [2024-06-28 02:56:43,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:56:43,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:56:43,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 133 transitions. [2024-06-28 02:56:43,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39002932551319647 [2024-06-28 02:56:43,641 INFO L175 Difference]: Start difference. First operand has 262 places, 152 transitions, 1357 flow. Second operand 11 states and 133 transitions. [2024-06-28 02:56:43,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 174 transitions, 1971 flow [2024-06-28 02:56:44,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 174 transitions, 1704 flow, removed 22 selfloop flow, removed 15 redundant places. [2024-06-28 02:56:44,296 INFO L231 Difference]: Finished difference. Result has 258 places, 148 transitions, 1130 flow [2024-06-28 02:56:44,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1090, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1130, PETRI_PLACES=258, PETRI_TRANSITIONS=148} [2024-06-28 02:56:44,296 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 228 predicate places. [2024-06-28 02:56:44,296 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 148 transitions, 1130 flow [2024-06-28 02:56:44,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:44,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:56:44,296 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:56:44,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2024-06-28 02:56:44,297 INFO L420 AbstractCegarLoop]: === Iteration 212 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:56:44,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:56:44,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1568876166, now seen corresponding path program 40 times [2024-06-28 02:56:44,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:56:44,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391499334] [2024-06-28 02:56:44,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:56:44,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:56:44,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:56:45,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:56:45,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:56:45,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391499334] [2024-06-28 02:56:45,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391499334] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:56:45,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:56:45,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:56:45,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499426398] [2024-06-28 02:56:45,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:56:45,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:56:45,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:56:45,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:56:45,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:56:46,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:56:46,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 148 transitions, 1130 flow. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:46,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:56:46,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:56:46,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:56:46,733 INFO L124 PetriNetUnfolderBase]: 446/938 cut-off events. [2024-06-28 02:56:46,733 INFO L125 PetriNetUnfolderBase]: For 223215/223215 co-relation queries the response was YES. [2024-06-28 02:56:46,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7193 conditions, 938 events. 446/938 cut-off events. For 223215/223215 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 5179 event pairs, 132 based on Foata normal form. 10/946 useless extension candidates. Maximal degree in co-relation 7084. Up to 775 conditions per place. [2024-06-28 02:56:46,741 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 126 selfloop transitions, 29 changer transitions 11/168 dead transitions. [2024-06-28 02:56:46,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 168 transitions, 1530 flow [2024-06-28 02:56:46,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 02:56:46,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 02:56:46,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 143 transitions. [2024-06-28 02:56:46,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 02:56:46,742 INFO L175 Difference]: Start difference. First operand has 258 places, 148 transitions, 1130 flow. Second operand 13 states and 143 transitions. [2024-06-28 02:56:46,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 168 transitions, 1530 flow [2024-06-28 02:56:47,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 168 transitions, 1437 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-28 02:56:47,165 INFO L231 Difference]: Finished difference. Result has 256 places, 144 transitions, 1064 flow [2024-06-28 02:56:47,165 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1037, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1064, PETRI_PLACES=256, PETRI_TRANSITIONS=144} [2024-06-28 02:56:47,166 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 226 predicate places. [2024-06-28 02:56:47,166 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 144 transitions, 1064 flow [2024-06-28 02:56:47,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:47,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:56:47,166 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:56:47,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2024-06-28 02:56:47,166 INFO L420 AbstractCegarLoop]: === Iteration 213 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:56:47,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:56:47,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1633761516, now seen corresponding path program 1 times [2024-06-28 02:56:47,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:56:47,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960590114] [2024-06-28 02:56:47,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:56:47,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:56:47,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:56:49,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:56:49,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:56:49,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960590114] [2024-06-28 02:56:49,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960590114] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:56:49,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:56:49,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:56:49,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947185080] [2024-06-28 02:56:49,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:56:49,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:56:49,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:56:49,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:56:49,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:56:49,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:56:49,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 144 transitions, 1064 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:49,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:56:49,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:56:49,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:56:50,152 INFO L124 PetriNetUnfolderBase]: 413/875 cut-off events. [2024-06-28 02:56:50,152 INFO L125 PetriNetUnfolderBase]: For 175705/175705 co-relation queries the response was YES. [2024-06-28 02:56:50,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6292 conditions, 875 events. 413/875 cut-off events. For 175705/175705 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 4755 event pairs, 120 based on Foata normal form. 6/879 useless extension candidates. Maximal degree in co-relation 6185. Up to 792 conditions per place. [2024-06-28 02:56:50,165 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 132 selfloop transitions, 11 changer transitions 20/165 dead transitions. [2024-06-28 02:56:50,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 165 transitions, 1458 flow [2024-06-28 02:56:50,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:56:50,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:56:50,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 126 transitions. [2024-06-28 02:56:50,166 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-28 02:56:50,166 INFO L175 Difference]: Start difference. First operand has 256 places, 144 transitions, 1064 flow. Second operand 12 states and 126 transitions. [2024-06-28 02:56:50,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 165 transitions, 1458 flow [2024-06-28 02:56:50,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 165 transitions, 1360 flow, removed 7 selfloop flow, removed 14 redundant places. [2024-06-28 02:56:50,451 INFO L231 Difference]: Finished difference. Result has 249 places, 138 transitions, 963 flow [2024-06-28 02:56:50,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=970, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=963, PETRI_PLACES=249, PETRI_TRANSITIONS=138} [2024-06-28 02:56:50,451 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 219 predicate places. [2024-06-28 02:56:50,451 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 138 transitions, 963 flow [2024-06-28 02:56:50,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:50,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:56:50,451 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:56:50,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2024-06-28 02:56:50,451 INFO L420 AbstractCegarLoop]: === Iteration 214 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:56:50,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:56:50,452 INFO L85 PathProgramCache]: Analyzing trace with hash -427079834, now seen corresponding path program 2 times [2024-06-28 02:56:50,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:56:50,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119992545] [2024-06-28 02:56:50,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:56:50,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:56:50,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:56:52,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:56:52,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:56:52,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119992545] [2024-06-28 02:56:52,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119992545] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:56:52,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:56:52,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:56:52,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694671595] [2024-06-28 02:56:52,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:56:52,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:56:52,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:56:52,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:56:52,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:56:52,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:56:52,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 138 transitions, 963 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:52,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:56:52,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:56:52,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:56:53,020 INFO L124 PetriNetUnfolderBase]: 399/844 cut-off events. [2024-06-28 02:56:53,021 INFO L125 PetriNetUnfolderBase]: For 168973/168973 co-relation queries the response was YES. [2024-06-28 02:56:53,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5956 conditions, 844 events. 399/844 cut-off events. For 168973/168973 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 4566 event pairs, 115 based on Foata normal form. 6/848 useless extension candidates. Maximal degree in co-relation 5852. Up to 551 conditions per place. [2024-06-28 02:56:53,028 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 101 selfloop transitions, 45 changer transitions 11/159 dead transitions. [2024-06-28 02:56:53,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 159 transitions, 1341 flow [2024-06-28 02:56:53,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:56:53,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:56:53,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-28 02:56:53,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3629032258064516 [2024-06-28 02:56:53,029 INFO L175 Difference]: Start difference. First operand has 249 places, 138 transitions, 963 flow. Second operand 12 states and 135 transitions. [2024-06-28 02:56:53,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 159 transitions, 1341 flow [2024-06-28 02:56:53,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 159 transitions, 1301 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-06-28 02:56:53,375 INFO L231 Difference]: Finished difference. Result has 237 places, 135 transitions, 1006 flow [2024-06-28 02:56:53,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=927, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1006, PETRI_PLACES=237, PETRI_TRANSITIONS=135} [2024-06-28 02:56:53,375 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 207 predicate places. [2024-06-28 02:56:53,375 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 135 transitions, 1006 flow [2024-06-28 02:56:53,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:53,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:56:53,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:56:53,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2024-06-28 02:56:53,376 INFO L420 AbstractCegarLoop]: === Iteration 215 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:56:53,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:56:53,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1543152614, now seen corresponding path program 3 times [2024-06-28 02:56:53,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:56:53,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129086892] [2024-06-28 02:56:53,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:56:53,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:56:53,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:56:55,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:56:55,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:56:55,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129086892] [2024-06-28 02:56:55,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129086892] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:56:55,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:56:55,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:56:55,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646743901] [2024-06-28 02:56:55,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:56:55,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:56:55,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:56:55,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:56:55,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:56:55,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:56:55,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 135 transitions, 1006 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:55,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:56:55,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:56:55,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:56:55,522 INFO L124 PetriNetUnfolderBase]: 404/859 cut-off events. [2024-06-28 02:56:55,522 INFO L125 PetriNetUnfolderBase]: For 178829/178829 co-relation queries the response was YES. [2024-06-28 02:56:55,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6356 conditions, 859 events. 404/859 cut-off events. For 178829/178829 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 4702 event pairs, 126 based on Foata normal form. 6/863 useless extension candidates. Maximal degree in co-relation 6256. Up to 480 conditions per place. [2024-06-28 02:56:55,529 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 104 selfloop transitions, 43 changer transitions 8/157 dead transitions. [2024-06-28 02:56:55,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 157 transitions, 1556 flow [2024-06-28 02:56:55,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:56:55,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:56:55,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-28 02:56:55,530 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3812316715542522 [2024-06-28 02:56:55,530 INFO L175 Difference]: Start difference. First operand has 237 places, 135 transitions, 1006 flow. Second operand 11 states and 130 transitions. [2024-06-28 02:56:55,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 157 transitions, 1556 flow [2024-06-28 02:56:55,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 157 transitions, 1454 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-28 02:56:55,854 INFO L231 Difference]: Finished difference. Result has 232 places, 131 transitions, 979 flow [2024-06-28 02:56:55,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=910, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=979, PETRI_PLACES=232, PETRI_TRANSITIONS=131} [2024-06-28 02:56:55,854 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 202 predicate places. [2024-06-28 02:56:55,854 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 131 transitions, 979 flow [2024-06-28 02:56:55,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:55,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:56:55,855 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:56:55,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2024-06-28 02:56:55,855 INFO L420 AbstractCegarLoop]: === Iteration 216 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:56:55,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:56:55,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1744501334, now seen corresponding path program 4 times [2024-06-28 02:56:55,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:56:55,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714500822] [2024-06-28 02:56:55,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:56:55,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:56:55,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:56:57,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:56:57,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:56:57,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714500822] [2024-06-28 02:56:57,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714500822] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:56:57,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:56:57,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:56:57,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115424387] [2024-06-28 02:56:57,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:56:57,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:56:57,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:56:57,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:56:57,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:56:57,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:56:57,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 131 transitions, 979 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:57,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:56:57,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:56:57,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:56:58,179 INFO L124 PetriNetUnfolderBase]: 377/802 cut-off events. [2024-06-28 02:56:58,179 INFO L125 PetriNetUnfolderBase]: For 149377/149377 co-relation queries the response was YES. [2024-06-28 02:56:58,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5606 conditions, 802 events. 377/802 cut-off events. For 149377/149377 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 4294 event pairs, 113 based on Foata normal form. 6/806 useless extension candidates. Maximal degree in co-relation 5508. Up to 523 conditions per place. [2024-06-28 02:56:58,185 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 97 selfloop transitions, 39 changer transitions 14/152 dead transitions. [2024-06-28 02:56:58,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 152 transitions, 1339 flow [2024-06-28 02:56:58,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:56:58,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:56:58,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-28 02:56:58,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3629032258064516 [2024-06-28 02:56:58,186 INFO L175 Difference]: Start difference. First operand has 232 places, 131 transitions, 979 flow. Second operand 12 states and 135 transitions. [2024-06-28 02:56:58,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 152 transitions, 1339 flow [2024-06-28 02:56:58,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 152 transitions, 1247 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-28 02:56:58,440 INFO L231 Difference]: Finished difference. Result has 228 places, 126 transitions, 942 flow [2024-06-28 02:56:58,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=887, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=942, PETRI_PLACES=228, PETRI_TRANSITIONS=126} [2024-06-28 02:56:58,441 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 198 predicate places. [2024-06-28 02:56:58,441 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 126 transitions, 942 flow [2024-06-28 02:56:58,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:56:58,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:56:58,441 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:56:58,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2024-06-28 02:56:58,441 INFO L420 AbstractCegarLoop]: === Iteration 217 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:56:58,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:56:58,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1652195542, now seen corresponding path program 5 times [2024-06-28 02:56:58,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:56:58,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934610414] [2024-06-28 02:56:58,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:56:58,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:56:58,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:00,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:00,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:00,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934610414] [2024-06-28 02:57:00,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934610414] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:00,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:00,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:57:00,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039777813] [2024-06-28 02:57:00,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:00,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:57:00,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:00,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:57:00,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:57:00,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:57:00,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 126 transitions, 942 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:00,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:00,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:57:00,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:01,054 INFO L124 PetriNetUnfolderBase]: 352/747 cut-off events. [2024-06-28 02:57:01,054 INFO L125 PetriNetUnfolderBase]: For 119169/119169 co-relation queries the response was YES. [2024-06-28 02:57:01,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4849 conditions, 747 events. 352/747 cut-off events. For 119169/119169 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3893 event pairs, 100 based on Foata normal form. 6/751 useless extension candidates. Maximal degree in co-relation 4754. Up to 480 conditions per place. [2024-06-28 02:57:01,060 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 88 selfloop transitions, 33 changer transitions 23/146 dead transitions. [2024-06-28 02:57:01,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 146 transitions, 1286 flow [2024-06-28 02:57:01,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:57:01,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:57:01,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 131 transitions. [2024-06-28 02:57:01,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3521505376344086 [2024-06-28 02:57:01,061 INFO L175 Difference]: Start difference. First operand has 228 places, 126 transitions, 942 flow. Second operand 12 states and 131 transitions. [2024-06-28 02:57:01,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 146 transitions, 1286 flow [2024-06-28 02:57:01,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 146 transitions, 1198 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-28 02:57:01,245 INFO L231 Difference]: Finished difference. Result has 220 places, 116 transitions, 860 flow [2024-06-28 02:57:01,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=854, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=860, PETRI_PLACES=220, PETRI_TRANSITIONS=116} [2024-06-28 02:57:01,245 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 190 predicate places. [2024-06-28 02:57:01,245 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 116 transitions, 860 flow [2024-06-28 02:57:01,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:01,245 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:01,245 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:01,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2024-06-28 02:57:01,245 INFO L420 AbstractCegarLoop]: === Iteration 218 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:01,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:01,246 INFO L85 PathProgramCache]: Analyzing trace with hash 109859272, now seen corresponding path program 6 times [2024-06-28 02:57:01,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:01,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884490010] [2024-06-28 02:57:01,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:01,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:01,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:03,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:03,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:03,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884490010] [2024-06-28 02:57:03,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884490010] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:03,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:03,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:57:03,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516141940] [2024-06-28 02:57:03,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:03,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:57:03,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:03,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:57:03,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:57:03,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:57:03,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 116 transitions, 860 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:03,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:03,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:57:03,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:04,334 INFO L124 PetriNetUnfolderBase]: 334/710 cut-off events. [2024-06-28 02:57:04,334 INFO L125 PetriNetUnfolderBase]: For 107719/107719 co-relation queries the response was YES. [2024-06-28 02:57:04,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4587 conditions, 710 events. 334/710 cut-off events. For 107719/107719 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3667 event pairs, 96 based on Foata normal form. 6/714 useless extension candidates. Maximal degree in co-relation 4496. Up to 579 conditions per place. [2024-06-28 02:57:04,339 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 95 selfloop transitions, 28 changer transitions 11/136 dead transitions. [2024-06-28 02:57:04,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 136 transitions, 1186 flow [2024-06-28 02:57:04,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:57:04,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:57:04,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-28 02:57:04,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3629032258064516 [2024-06-28 02:57:04,340 INFO L175 Difference]: Start difference. First operand has 220 places, 116 transitions, 860 flow. Second operand 12 states and 135 transitions. [2024-06-28 02:57:04,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 136 transitions, 1186 flow [2024-06-28 02:57:04,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 136 transitions, 1086 flow, removed 9 selfloop flow, removed 15 redundant places. [2024-06-28 02:57:04,523 INFO L231 Difference]: Finished difference. Result has 203 places, 113 transitions, 804 flow [2024-06-28 02:57:04,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=762, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=804, PETRI_PLACES=203, PETRI_TRANSITIONS=113} [2024-06-28 02:57:04,524 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 173 predicate places. [2024-06-28 02:57:04,524 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 113 transitions, 804 flow [2024-06-28 02:57:04,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:04,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:04,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:04,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2024-06-28 02:57:04,524 INFO L420 AbstractCegarLoop]: === Iteration 219 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:04,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:04,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1147313322, now seen corresponding path program 7 times [2024-06-28 02:57:04,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:04,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153592568] [2024-06-28 02:57:04,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:04,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:04,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:06,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:06,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:06,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153592568] [2024-06-28 02:57:06,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153592568] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:06,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:06,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:57:06,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257510282] [2024-06-28 02:57:06,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:06,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:57:06,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:06,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:57:06,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:57:06,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:57:06,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 113 transitions, 804 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:06,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:06,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:57:06,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:07,012 INFO L124 PetriNetUnfolderBase]: 324/692 cut-off events. [2024-06-28 02:57:07,012 INFO L125 PetriNetUnfolderBase]: For 92396/92396 co-relation queries the response was YES. [2024-06-28 02:57:07,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4282 conditions, 692 events. 324/692 cut-off events. For 92396/92396 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3558 event pairs, 94 based on Foata normal form. 6/696 useless extension candidates. Maximal degree in co-relation 4200. Up to 579 conditions per place. [2024-06-28 02:57:07,017 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 93 selfloop transitions, 23 changer transitions 14/132 dead transitions. [2024-06-28 02:57:07,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 132 transitions, 1114 flow [2024-06-28 02:57:07,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:57:07,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:57:07,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 131 transitions. [2024-06-28 02:57:07,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3521505376344086 [2024-06-28 02:57:07,018 INFO L175 Difference]: Start difference. First operand has 203 places, 113 transitions, 804 flow. Second operand 12 states and 131 transitions. [2024-06-28 02:57:07,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 132 transitions, 1114 flow [2024-06-28 02:57:07,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 132 transitions, 1052 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 02:57:07,160 INFO L231 Difference]: Finished difference. Result has 199 places, 109 transitions, 767 flow [2024-06-28 02:57:07,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=742, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=767, PETRI_PLACES=199, PETRI_TRANSITIONS=109} [2024-06-28 02:57:07,161 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 169 predicate places. [2024-06-28 02:57:07,161 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 109 transitions, 767 flow [2024-06-28 02:57:07,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:07,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:07,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:07,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2024-06-28 02:57:07,161 INFO L420 AbstractCegarLoop]: === Iteration 220 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:07,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:07,161 INFO L85 PathProgramCache]: Analyzing trace with hash 536281514, now seen corresponding path program 8 times [2024-06-28 02:57:07,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:07,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273205278] [2024-06-28 02:57:07,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:07,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:07,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:09,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:09,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:09,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273205278] [2024-06-28 02:57:09,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273205278] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:09,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:09,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:57:09,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506279241] [2024-06-28 02:57:09,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:09,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:57:09,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:09,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:57:09,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:57:09,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:57:09,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 109 transitions, 767 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:09,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:09,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:57:09,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:10,043 INFO L124 PetriNetUnfolderBase]: 295/633 cut-off events. [2024-06-28 02:57:10,043 INFO L125 PetriNetUnfolderBase]: For 72774/72774 co-relation queries the response was YES. [2024-06-28 02:57:10,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3632 conditions, 633 events. 295/633 cut-off events. For 72774/72774 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3187 event pairs, 82 based on Foata normal form. 6/637 useless extension candidates. Maximal degree in co-relation 3552. Up to 527 conditions per place. [2024-06-28 02:57:10,047 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 92 selfloop transitions, 21 changer transitions 13/128 dead transitions. [2024-06-28 02:57:10,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 128 transitions, 1071 flow [2024-06-28 02:57:10,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:57:10,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:57:10,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-28 02:57:10,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 02:57:10,048 INFO L175 Difference]: Start difference. First operand has 199 places, 109 transitions, 767 flow. Second operand 12 states and 132 transitions. [2024-06-28 02:57:10,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 128 transitions, 1071 flow [2024-06-28 02:57:10,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 128 transitions, 1017 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-28 02:57:10,160 INFO L231 Difference]: Finished difference. Result has 193 places, 105 transitions, 735 flow [2024-06-28 02:57:10,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=713, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=735, PETRI_PLACES=193, PETRI_TRANSITIONS=105} [2024-06-28 02:57:10,161 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 163 predicate places. [2024-06-28 02:57:10,161 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 105 transitions, 735 flow [2024-06-28 02:57:10,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:10,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:10,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:10,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2024-06-28 02:57:10,161 INFO L420 AbstractCegarLoop]: === Iteration 221 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:10,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:10,161 INFO L85 PathProgramCache]: Analyzing trace with hash 737630234, now seen corresponding path program 9 times [2024-06-28 02:57:10,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:10,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883895631] [2024-06-28 02:57:10,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:10,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:10,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:12,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:12,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:12,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883895631] [2024-06-28 02:57:12,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883895631] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:12,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:12,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:57:12,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907510095] [2024-06-28 02:57:12,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:12,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:57:12,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:12,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:57:12,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:57:12,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:57:12,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 105 transitions, 735 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:12,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:12,240 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:57:12,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:12,500 INFO L124 PetriNetUnfolderBase]: 286/614 cut-off events. [2024-06-28 02:57:12,500 INFO L125 PetriNetUnfolderBase]: For 68644/68644 co-relation queries the response was YES. [2024-06-28 02:57:12,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3513 conditions, 614 events. 286/614 cut-off events. For 68644/68644 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3045 event pairs, 79 based on Foata normal form. 6/618 useless extension candidates. Maximal degree in co-relation 3436. Up to 500 conditions per place. [2024-06-28 02:57:12,504 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 85 selfloop transitions, 21 changer transitions 16/124 dead transitions. [2024-06-28 02:57:12,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 124 transitions, 1029 flow [2024-06-28 02:57:12,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:57:12,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:57:12,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 131 transitions. [2024-06-28 02:57:12,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3521505376344086 [2024-06-28 02:57:12,505 INFO L175 Difference]: Start difference. First operand has 193 places, 105 transitions, 735 flow. Second operand 12 states and 131 transitions. [2024-06-28 02:57:12,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 124 transitions, 1029 flow [2024-06-28 02:57:12,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 124 transitions, 979 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-28 02:57:12,595 INFO L231 Difference]: Finished difference. Result has 186 places, 100 transitions, 704 flow [2024-06-28 02:57:12,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=685, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=704, PETRI_PLACES=186, PETRI_TRANSITIONS=100} [2024-06-28 02:57:12,595 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 156 predicate places. [2024-06-28 02:57:12,595 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 100 transitions, 704 flow [2024-06-28 02:57:12,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:12,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:12,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:12,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2024-06-28 02:57:12,596 INFO L420 AbstractCegarLoop]: === Iteration 222 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:12,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:12,596 INFO L85 PathProgramCache]: Analyzing trace with hash -723020148, now seen corresponding path program 10 times [2024-06-28 02:57:12,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:12,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531599703] [2024-06-28 02:57:12,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:12,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:12,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:14,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:14,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:14,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531599703] [2024-06-28 02:57:14,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531599703] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:14,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:14,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:57:14,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335209372] [2024-06-28 02:57:14,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:14,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:57:14,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:14,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:57:14,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:57:14,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:57:14,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 100 transitions, 704 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:14,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:14,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:57:14,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:15,301 INFO L124 PetriNetUnfolderBase]: 273/587 cut-off events. [2024-06-28 02:57:15,301 INFO L125 PetriNetUnfolderBase]: For 62710/62710 co-relation queries the response was YES. [2024-06-28 02:57:15,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3364 conditions, 587 events. 273/587 cut-off events. For 62710/62710 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2865 event pairs, 75 based on Foata normal form. 6/591 useless extension candidates. Maximal degree in co-relation 3290. Up to 474 conditions per place. [2024-06-28 02:57:15,305 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 79 selfloop transitions, 18 changer transitions 20/119 dead transitions. [2024-06-28 02:57:15,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 119 transitions, 986 flow [2024-06-28 02:57:15,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:57:15,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:57:15,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 129 transitions. [2024-06-28 02:57:15,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3467741935483871 [2024-06-28 02:57:15,306 INFO L175 Difference]: Start difference. First operand has 186 places, 100 transitions, 704 flow. Second operand 12 states and 129 transitions. [2024-06-28 02:57:15,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 119 transitions, 986 flow [2024-06-28 02:57:15,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 119 transitions, 934 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-28 02:57:15,391 INFO L231 Difference]: Finished difference. Result has 178 places, 93 transitions, 658 flow [2024-06-28 02:57:15,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=652, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=658, PETRI_PLACES=178, PETRI_TRANSITIONS=93} [2024-06-28 02:57:15,391 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 148 predicate places. [2024-06-28 02:57:15,392 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 93 transitions, 658 flow [2024-06-28 02:57:15,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:15,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:15,392 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:15,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2024-06-28 02:57:15,392 INFO L420 AbstractCegarLoop]: === Iteration 223 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:15,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:15,392 INFO L85 PathProgramCache]: Analyzing trace with hash -2014177652, now seen corresponding path program 11 times [2024-06-28 02:57:15,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:15,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443585842] [2024-06-28 02:57:15,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:15,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:15,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:17,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:17,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:17,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443585842] [2024-06-28 02:57:17,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443585842] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:17,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:17,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:57:17,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884206652] [2024-06-28 02:57:17,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:17,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:57:17,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:17,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:57:17,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:57:17,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:57:17,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 93 transitions, 658 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:17,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:17,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:57:17,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:18,172 INFO L124 PetriNetUnfolderBase]: 239/517 cut-off events. [2024-06-28 02:57:18,172 INFO L125 PetriNetUnfolderBase]: For 44214/44214 co-relation queries the response was YES. [2024-06-28 02:57:18,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2712 conditions, 517 events. 239/517 cut-off events. For 44214/44214 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2442 event pairs, 63 based on Foata normal form. 6/521 useless extension candidates. Maximal degree in co-relation 2642. Up to 405 conditions per place. [2024-06-28 02:57:18,175 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 77 selfloop transitions, 19 changer transitions 14/112 dead transitions. [2024-06-28 02:57:18,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 112 transitions, 930 flow [2024-06-28 02:57:18,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:57:18,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:57:18,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-28 02:57:18,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 02:57:18,176 INFO L175 Difference]: Start difference. First operand has 178 places, 93 transitions, 658 flow. Second operand 12 states and 132 transitions. [2024-06-28 02:57:18,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 112 transitions, 930 flow [2024-06-28 02:57:18,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 112 transitions, 884 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-28 02:57:18,228 INFO L231 Difference]: Finished difference. Result has 169 places, 88 transitions, 625 flow [2024-06-28 02:57:18,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=612, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=625, PETRI_PLACES=169, PETRI_TRANSITIONS=88} [2024-06-28 02:57:18,228 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 139 predicate places. [2024-06-28 02:57:18,228 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 88 transitions, 625 flow [2024-06-28 02:57:18,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:18,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:18,228 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:18,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2024-06-28 02:57:18,228 INFO L420 AbstractCegarLoop]: === Iteration 224 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:18,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:18,229 INFO L85 PathProgramCache]: Analyzing trace with hash -954549048, now seen corresponding path program 12 times [2024-06-28 02:57:18,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:18,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485632285] [2024-06-28 02:57:18,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:18,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:18,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:20,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:20,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:20,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485632285] [2024-06-28 02:57:20,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485632285] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:20,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:20,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:57:20,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234440169] [2024-06-28 02:57:20,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:20,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:57:20,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:20,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:57:20,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:57:20,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:57:20,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 88 transitions, 625 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:20,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:20,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:57:20,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:20,766 INFO L124 PetriNetUnfolderBase]: 229/495 cut-off events. [2024-06-28 02:57:20,766 INFO L125 PetriNetUnfolderBase]: For 38697/38697 co-relation queries the response was YES. [2024-06-28 02:57:20,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2566 conditions, 495 events. 229/495 cut-off events. For 38697/38697 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2283 event pairs, 61 based on Foata normal form. 6/499 useless extension candidates. Maximal degree in co-relation 2500. Up to 381 conditions per place. [2024-06-28 02:57:20,768 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 74 selfloop transitions, 20 changer transitions 10/106 dead transitions. [2024-06-28 02:57:20,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 106 transitions, 879 flow [2024-06-28 02:57:20,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:57:20,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:57:20,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 128 transitions. [2024-06-28 02:57:20,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-28 02:57:20,769 INFO L175 Difference]: Start difference. First operand has 169 places, 88 transitions, 625 flow. Second operand 12 states and 128 transitions. [2024-06-28 02:57:20,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 106 transitions, 879 flow [2024-06-28 02:57:20,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 106 transitions, 827 flow, removed 7 selfloop flow, removed 12 redundant places. [2024-06-28 02:57:20,818 INFO L231 Difference]: Finished difference. Result has 160 places, 84 transitions, 597 flow [2024-06-28 02:57:20,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=575, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=597, PETRI_PLACES=160, PETRI_TRANSITIONS=84} [2024-06-28 02:57:20,819 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 130 predicate places. [2024-06-28 02:57:20,819 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 84 transitions, 597 flow [2024-06-28 02:57:20,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:20,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:20,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:20,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2024-06-28 02:57:20,820 INFO L420 AbstractCegarLoop]: === Iteration 225 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:20,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:20,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1155897768, now seen corresponding path program 13 times [2024-06-28 02:57:20,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:20,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991145281] [2024-06-28 02:57:20,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:20,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:20,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:22,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:22,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:22,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991145281] [2024-06-28 02:57:22,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991145281] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:22,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:22,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:57:22,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675071543] [2024-06-28 02:57:22,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:22,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:57:22,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:22,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:57:22,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:57:23,194 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:57:23,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 84 transitions, 597 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:23,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:23,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:57:23,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:23,543 INFO L124 PetriNetUnfolderBase]: 202/438 cut-off events. [2024-06-28 02:57:23,543 INFO L125 PetriNetUnfolderBase]: For 25426/25426 co-relation queries the response was YES. [2024-06-28 02:57:23,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2014 conditions, 438 events. 202/438 cut-off events. For 25426/25426 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1941 event pairs, 50 based on Foata normal form. 6/442 useless extension candidates. Maximal degree in co-relation 1952. Up to 344 conditions per place. [2024-06-28 02:57:23,546 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 63 selfloop transitions, 10 changer transitions 26/101 dead transitions. [2024-06-28 02:57:23,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 101 transitions, 837 flow [2024-06-28 02:57:23,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:57:23,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:57:23,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-28 02:57:23,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33602150537634407 [2024-06-28 02:57:23,547 INFO L175 Difference]: Start difference. First operand has 160 places, 84 transitions, 597 flow. Second operand 12 states and 125 transitions. [2024-06-28 02:57:23,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 101 transitions, 837 flow [2024-06-28 02:57:23,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 101 transitions, 789 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-28 02:57:23,577 INFO L231 Difference]: Finished difference. Result has 154 places, 72 transitions, 504 flow [2024-06-28 02:57:23,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=549, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=504, PETRI_PLACES=154, PETRI_TRANSITIONS=72} [2024-06-28 02:57:23,577 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 124 predicate places. [2024-06-28 02:57:23,577 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 72 transitions, 504 flow [2024-06-28 02:57:23,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:23,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:23,578 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:23,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2024-06-28 02:57:23,578 INFO L420 AbstractCegarLoop]: === Iteration 226 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:23,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:23,578 INFO L85 PathProgramCache]: Analyzing trace with hash -141701610, now seen corresponding path program 14 times [2024-06-28 02:57:23,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:23,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10972547] [2024-06-28 02:57:23,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:23,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:23,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:26,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:26,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:26,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10972547] [2024-06-28 02:57:26,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10972547] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:26,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:26,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:57:26,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607634652] [2024-06-28 02:57:26,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:26,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:57:26,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:26,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:57:26,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:57:26,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:57:26,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 72 transitions, 504 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:26,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:26,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:57:26,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:27,020 INFO L124 PetriNetUnfolderBase]: 192/409 cut-off events. [2024-06-28 02:57:27,020 INFO L125 PetriNetUnfolderBase]: For 22532/22532 co-relation queries the response was YES. [2024-06-28 02:57:27,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1851 conditions, 409 events. 192/409 cut-off events. For 22532/22532 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1787 event pairs, 48 based on Foata normal form. 6/414 useless extension candidates. Maximal degree in co-relation 1792. Up to 340 conditions per place. [2024-06-28 02:57:27,023 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 63 selfloop transitions, 8 changer transitions 17/90 dead transitions. [2024-06-28 02:57:27,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 90 transitions, 725 flow [2024-06-28 02:57:27,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:57:27,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:57:27,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 119 transitions. [2024-06-28 02:57:27,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31989247311827956 [2024-06-28 02:57:27,023 INFO L175 Difference]: Start difference. First operand has 154 places, 72 transitions, 504 flow. Second operand 12 states and 119 transitions. [2024-06-28 02:57:27,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 90 transitions, 725 flow [2024-06-28 02:57:27,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 90 transitions, 677 flow, removed 9 selfloop flow, removed 17 redundant places. [2024-06-28 02:57:27,051 INFO L231 Difference]: Finished difference. Result has 133 places, 69 transitions, 449 flow [2024-06-28 02:57:27,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=456, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=449, PETRI_PLACES=133, PETRI_TRANSITIONS=69} [2024-06-28 02:57:27,051 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 103 predicate places. [2024-06-28 02:57:27,051 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 69 transitions, 449 flow [2024-06-28 02:57:27,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:27,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:27,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:27,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2024-06-28 02:57:27,052 INFO L420 AbstractCegarLoop]: === Iteration 227 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:27,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:27,052 INFO L85 PathProgramCache]: Analyzing trace with hash -55237688, now seen corresponding path program 15 times [2024-06-28 02:57:27,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:27,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616094079] [2024-06-28 02:57:27,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:27,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:27,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:29,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:29,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:29,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616094079] [2024-06-28 02:57:29,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616094079] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:29,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:29,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:57:29,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31955345] [2024-06-28 02:57:29,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:29,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:57:29,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:29,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:57:29,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:57:29,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:57:29,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 69 transitions, 449 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:29,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:29,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:57:29,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:30,090 INFO L124 PetriNetUnfolderBase]: 176/377 cut-off events. [2024-06-28 02:57:30,091 INFO L125 PetriNetUnfolderBase]: For 15876/15876 co-relation queries the response was YES. [2024-06-28 02:57:30,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1637 conditions, 377 events. 176/377 cut-off events. For 15876/15876 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1609 event pairs, 42 based on Foata normal form. 6/382 useless extension candidates. Maximal degree in co-relation 1584. Up to 288 conditions per place. [2024-06-28 02:57:30,092 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 59 selfloop transitions, 14 changer transitions 11/86 dead transitions. [2024-06-28 02:57:30,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 86 transitions, 661 flow [2024-06-28 02:57:30,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:57:30,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:57:30,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-28 02:57:30,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33602150537634407 [2024-06-28 02:57:30,093 INFO L175 Difference]: Start difference. First operand has 133 places, 69 transitions, 449 flow. Second operand 12 states and 125 transitions. [2024-06-28 02:57:30,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 86 transitions, 661 flow [2024-06-28 02:57:30,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 86 transitions, 589 flow, removed 5 selfloop flow, removed 15 redundant places. [2024-06-28 02:57:30,111 INFO L231 Difference]: Finished difference. Result has 125 places, 66 transitions, 394 flow [2024-06-28 02:57:30,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=377, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=394, PETRI_PLACES=125, PETRI_TRANSITIONS=66} [2024-06-28 02:57:30,111 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 95 predicate places. [2024-06-28 02:57:30,111 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 66 transitions, 394 flow [2024-06-28 02:57:30,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:30,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:30,112 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:30,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2024-06-28 02:57:30,112 INFO L420 AbstractCegarLoop]: === Iteration 228 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:30,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:30,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1196797528, now seen corresponding path program 16 times [2024-06-28 02:57:30,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:30,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583648292] [2024-06-28 02:57:30,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:30,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:30,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:32,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:32,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:32,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583648292] [2024-06-28 02:57:32,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583648292] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:32,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:32,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:57:32,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826602836] [2024-06-28 02:57:32,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:32,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:57:32,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:32,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:57:32,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:57:32,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:57:32,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 66 transitions, 394 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:32,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:32,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:57:32,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:32,860 INFO L124 PetriNetUnfolderBase]: 166/359 cut-off events. [2024-06-28 02:57:32,860 INFO L125 PetriNetUnfolderBase]: For 15838/15838 co-relation queries the response was YES. [2024-06-28 02:57:32,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1531 conditions, 359 events. 166/359 cut-off events. For 15838/15838 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1499 event pairs, 40 based on Foata normal form. 6/364 useless extension candidates. Maximal degree in co-relation 1482. Up to 225 conditions per place. [2024-06-28 02:57:32,862 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 48 selfloop transitions, 21 changer transitions 12/83 dead transitions. [2024-06-28 02:57:32,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 83 transitions, 600 flow [2024-06-28 02:57:32,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:57:32,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:57:32,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 127 transitions. [2024-06-28 02:57:32,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34139784946236557 [2024-06-28 02:57:32,863 INFO L175 Difference]: Start difference. First operand has 125 places, 66 transitions, 394 flow. Second operand 12 states and 127 transitions. [2024-06-28 02:57:32,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 83 transitions, 600 flow [2024-06-28 02:57:32,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 83 transitions, 566 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 02:57:32,880 INFO L231 Difference]: Finished difference. Result has 121 places, 62 transitions, 385 flow [2024-06-28 02:57:32,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=385, PETRI_PLACES=121, PETRI_TRANSITIONS=62} [2024-06-28 02:57:32,880 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 91 predicate places. [2024-06-28 02:57:32,881 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 62 transitions, 385 flow [2024-06-28 02:57:32,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:32,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:32,881 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:32,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2024-06-28 02:57:32,881 INFO L420 AbstractCegarLoop]: === Iteration 229 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:32,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:32,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1204641766, now seen corresponding path program 17 times [2024-06-28 02:57:32,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:32,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840472470] [2024-06-28 02:57:32,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:32,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:32,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:35,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:35,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:35,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840472470] [2024-06-28 02:57:35,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840472470] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:35,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:35,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:57:35,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081743331] [2024-06-28 02:57:35,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:35,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:57:35,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:35,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:57:35,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:57:35,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:57:35,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 62 transitions, 385 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:35,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:35,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:57:35,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:35,922 INFO L124 PetriNetUnfolderBase]: 157/340 cut-off events. [2024-06-28 02:57:35,922 INFO L125 PetriNetUnfolderBase]: For 14390/14390 co-relation queries the response was YES. [2024-06-28 02:57:35,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1467 conditions, 340 events. 157/340 cut-off events. For 14390/14390 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1387 event pairs, 40 based on Foata normal form. 6/345 useless extension candidates. Maximal degree in co-relation 1420. Up to 261 conditions per place. [2024-06-28 02:57:35,924 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 48 selfloop transitions, 10 changer transitions 18/78 dead transitions. [2024-06-28 02:57:35,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 78 transitions, 575 flow [2024-06-28 02:57:35,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:57:35,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:57:35,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 122 transitions. [2024-06-28 02:57:35,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3279569892473118 [2024-06-28 02:57:35,925 INFO L175 Difference]: Start difference. First operand has 121 places, 62 transitions, 385 flow. Second operand 12 states and 122 transitions. [2024-06-28 02:57:35,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 78 transitions, 575 flow [2024-06-28 02:57:35,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 78 transitions, 525 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-28 02:57:35,939 INFO L231 Difference]: Finished difference. Result has 115 places, 56 transitions, 329 flow [2024-06-28 02:57:35,939 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=335, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=329, PETRI_PLACES=115, PETRI_TRANSITIONS=56} [2024-06-28 02:57:35,940 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 85 predicate places. [2024-06-28 02:57:35,940 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 56 transitions, 329 flow [2024-06-28 02:57:35,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:35,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:35,940 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:35,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2024-06-28 02:57:35,940 INFO L420 AbstractCegarLoop]: === Iteration 230 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:35,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:35,940 INFO L85 PathProgramCache]: Analyzing trace with hash 601730504, now seen corresponding path program 18 times [2024-06-28 02:57:35,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:35,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903170077] [2024-06-28 02:57:35,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:35,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:35,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:37,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:37,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:37,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903170077] [2024-06-28 02:57:37,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903170077] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:37,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:37,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 02:57:37,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375261813] [2024-06-28 02:57:37,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:37,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 02:57:37,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:37,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 02:57:37,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 02:57:37,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:57:37,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 56 transitions, 329 flow. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:37,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:37,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:57:37,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:37,839 INFO L124 PetriNetUnfolderBase]: 143/310 cut-off events. [2024-06-28 02:57:37,839 INFO L125 PetriNetUnfolderBase]: For 12284/12284 co-relation queries the response was YES. [2024-06-28 02:57:37,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1320 conditions, 310 events. 143/310 cut-off events. For 12284/12284 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1205 event pairs, 46 based on Foata normal form. 6/315 useless extension candidates. Maximal degree in co-relation 1276. Up to 241 conditions per place. [2024-06-28 02:57:37,841 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 47 selfloop transitions, 12 changer transitions 9/70 dead transitions. [2024-06-28 02:57:37,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 70 transitions, 501 flow [2024-06-28 02:57:37,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:57:37,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:57:37,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2024-06-28 02:57:37,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3313782991202346 [2024-06-28 02:57:37,842 INFO L175 Difference]: Start difference. First operand has 115 places, 56 transitions, 329 flow. Second operand 11 states and 113 transitions. [2024-06-28 02:57:37,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 70 transitions, 501 flow [2024-06-28 02:57:37,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 70 transitions, 469 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-28 02:57:37,850 INFO L231 Difference]: Finished difference. Result has 104 places, 53 transitions, 309 flow [2024-06-28 02:57:37,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=309, PETRI_PLACES=104, PETRI_TRANSITIONS=53} [2024-06-28 02:57:37,851 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 74 predicate places. [2024-06-28 02:57:37,851 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 53 transitions, 309 flow [2024-06-28 02:57:37,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:37,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:37,851 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:37,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2024-06-28 02:57:37,851 INFO L420 AbstractCegarLoop]: === Iteration 231 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:37,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:37,851 INFO L85 PathProgramCache]: Analyzing trace with hash -615845034, now seen corresponding path program 19 times [2024-06-28 02:57:37,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:37,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715603387] [2024-06-28 02:57:37,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:37,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:37,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:39,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:39,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:39,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715603387] [2024-06-28 02:57:39,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715603387] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:39,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:39,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:57:39,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425484088] [2024-06-28 02:57:39,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:39,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:57:39,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:39,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:57:39,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:57:39,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:57:39,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 53 transitions, 309 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:39,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:39,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:57:39,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:39,776 INFO L124 PetriNetUnfolderBase]: 133/292 cut-off events. [2024-06-28 02:57:39,776 INFO L125 PetriNetUnfolderBase]: For 9184/9184 co-relation queries the response was YES. [2024-06-28 02:57:39,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1209 conditions, 292 events. 133/292 cut-off events. For 9184/9184 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1119 event pairs, 40 based on Foata normal form. 6/297 useless extension candidates. Maximal degree in co-relation 1170. Up to 228 conditions per place. [2024-06-28 02:57:39,777 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 41 selfloop transitions, 6 changer transitions 18/67 dead transitions. [2024-06-28 02:57:39,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 67 transitions, 469 flow [2024-06-28 02:57:39,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:57:39,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:57:39,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 116 transitions. [2024-06-28 02:57:39,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3118279569892473 [2024-06-28 02:57:39,778 INFO L175 Difference]: Start difference. First operand has 104 places, 53 transitions, 309 flow. Second operand 12 states and 116 transitions. [2024-06-28 02:57:39,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 67 transitions, 469 flow [2024-06-28 02:57:39,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 67 transitions, 439 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 02:57:39,785 INFO L231 Difference]: Finished difference. Result has 101 places, 46 transitions, 260 flow [2024-06-28 02:57:39,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=260, PETRI_PLACES=101, PETRI_TRANSITIONS=46} [2024-06-28 02:57:39,785 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 71 predicate places. [2024-06-28 02:57:39,785 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 46 transitions, 260 flow [2024-06-28 02:57:39,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:39,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:39,785 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:39,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2024-06-28 02:57:39,785 INFO L420 AbstractCegarLoop]: === Iteration 232 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:39,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:39,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1397886778, now seen corresponding path program 20 times [2024-06-28 02:57:39,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:39,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917171774] [2024-06-28 02:57:39,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:39,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:39,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:42,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:42,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:42,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917171774] [2024-06-28 02:57:42,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917171774] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:42,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:42,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:57:42,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924194368] [2024-06-28 02:57:42,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:42,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:57:42,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:42,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:57:42,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:57:42,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:57:42,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 46 transitions, 260 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:42,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:42,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:57:42,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:42,684 INFO L124 PetriNetUnfolderBase]: 119/262 cut-off events. [2024-06-28 02:57:42,684 INFO L125 PetriNetUnfolderBase]: For 8056/8056 co-relation queries the response was YES. [2024-06-28 02:57:42,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1085 conditions, 262 events. 119/262 cut-off events. For 8056/8056 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 957 event pairs, 42 based on Foata normal form. 6/267 useless extension candidates. Maximal degree in co-relation 1048. Up to 157 conditions per place. [2024-06-28 02:57:42,685 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 32 selfloop transitions, 17 changer transitions 9/60 dead transitions. [2024-06-28 02:57:42,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 60 transitions, 412 flow [2024-06-28 02:57:42,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:57:42,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:57:42,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 111 transitions. [2024-06-28 02:57:42,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3255131964809384 [2024-06-28 02:57:42,686 INFO L175 Difference]: Start difference. First operand has 101 places, 46 transitions, 260 flow. Second operand 11 states and 111 transitions. [2024-06-28 02:57:42,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 60 transitions, 412 flow [2024-06-28 02:57:42,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 60 transitions, 379 flow, removed 9 selfloop flow, removed 11 redundant places. [2024-06-28 02:57:42,691 INFO L231 Difference]: Finished difference. Result has 89 places, 43 transitions, 256 flow [2024-06-28 02:57:42,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=256, PETRI_PLACES=89, PETRI_TRANSITIONS=43} [2024-06-28 02:57:42,692 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 59 predicate places. [2024-06-28 02:57:42,692 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 43 transitions, 256 flow [2024-06-28 02:57:42,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:42,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:42,692 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:42,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2024-06-28 02:57:42,692 INFO L420 AbstractCegarLoop]: === Iteration 233 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:42,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:42,692 INFO L85 PathProgramCache]: Analyzing trace with hash 2071577656, now seen corresponding path program 21 times [2024-06-28 02:57:42,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:42,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758643792] [2024-06-28 02:57:42,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:42,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:42,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:44,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:44,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:44,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758643792] [2024-06-28 02:57:44,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758643792] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:44,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:44,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:57:44,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197240319] [2024-06-28 02:57:44,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:44,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:57:44,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:44,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:57:44,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:57:44,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:57:44,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 43 transitions, 256 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:44,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:44,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:57:44,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:44,900 INFO L124 PetriNetUnfolderBase]: 109/244 cut-off events. [2024-06-28 02:57:44,900 INFO L125 PetriNetUnfolderBase]: For 6066/6066 co-relation queries the response was YES. [2024-06-28 02:57:44,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 992 conditions, 244 events. 109/244 cut-off events. For 6066/6066 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 871 event pairs, 34 based on Foata normal form. 6/249 useless extension candidates. Maximal degree in co-relation 960. Up to 166 conditions per place. [2024-06-28 02:57:44,901 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 34 selfloop transitions, 9 changer transitions 15/60 dead transitions. [2024-06-28 02:57:44,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 60 transitions, 408 flow [2024-06-28 02:57:44,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:57:44,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:57:44,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 120 transitions. [2024-06-28 02:57:44,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-28 02:57:44,902 INFO L175 Difference]: Start difference. First operand has 89 places, 43 transitions, 256 flow. Second operand 12 states and 120 transitions. [2024-06-28 02:57:44,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 60 transitions, 408 flow [2024-06-28 02:57:44,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 60 transitions, 368 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 02:57:44,908 INFO L231 Difference]: Finished difference. Result has 86 places, 38 transitions, 213 flow [2024-06-28 02:57:44,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=213, PETRI_PLACES=86, PETRI_TRANSITIONS=38} [2024-06-28 02:57:44,908 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 56 predicate places. [2024-06-28 02:57:44,909 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 38 transitions, 213 flow [2024-06-28 02:57:44,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:44,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:44,909 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:44,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232 [2024-06-28 02:57:44,909 INFO L420 AbstractCegarLoop]: === Iteration 234 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:44,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:44,910 INFO L85 PathProgramCache]: Analyzing trace with hash 601989974, now seen corresponding path program 22 times [2024-06-28 02:57:44,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:44,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022857393] [2024-06-28 02:57:44,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:44,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:44,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:46,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:46,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:46,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022857393] [2024-06-28 02:57:46,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022857393] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:46,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:46,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:57:46,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490697357] [2024-06-28 02:57:46,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:46,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:57:46,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:46,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:57:46,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:57:47,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:57:47,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 38 transitions, 213 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:47,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:47,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:57:47,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:47,373 INFO L124 PetriNetUnfolderBase]: 96/217 cut-off events. [2024-06-28 02:57:47,373 INFO L125 PetriNetUnfolderBase]: For 5148/5148 co-relation queries the response was YES. [2024-06-28 02:57:47,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 878 conditions, 217 events. 96/217 cut-off events. For 5148/5148 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 735 event pairs, 32 based on Foata normal form. 6/222 useless extension candidates. Maximal degree in co-relation 848. Up to 148 conditions per place. [2024-06-28 02:57:47,374 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 30 selfloop transitions, 8 changer transitions 12/52 dead transitions. [2024-06-28 02:57:47,374 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 52 transitions, 343 flow [2024-06-28 02:57:47,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:57:47,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:57:47,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 109 transitions. [2024-06-28 02:57:47,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3196480938416422 [2024-06-28 02:57:47,374 INFO L175 Difference]: Start difference. First operand has 86 places, 38 transitions, 213 flow. Second operand 11 states and 109 transitions. [2024-06-28 02:57:47,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 52 transitions, 343 flow [2024-06-28 02:57:47,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 52 transitions, 309 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-28 02:57:47,378 INFO L231 Difference]: Finished difference. Result has 77 places, 34 transitions, 180 flow [2024-06-28 02:57:47,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=180, PETRI_PLACES=77, PETRI_TRANSITIONS=34} [2024-06-28 02:57:47,379 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 47 predicate places. [2024-06-28 02:57:47,379 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 34 transitions, 180 flow [2024-06-28 02:57:47,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:47,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:47,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:47,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233 [2024-06-28 02:57:47,379 INFO L420 AbstractCegarLoop]: === Iteration 235 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:47,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:47,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1398146248, now seen corresponding path program 23 times [2024-06-28 02:57:47,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:47,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616462732] [2024-06-28 02:57:47,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:47,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:47,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:50,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:50,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:50,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616462732] [2024-06-28 02:57:50,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616462732] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:50,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:50,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:57:50,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331237769] [2024-06-28 02:57:50,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:50,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:57:50,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:50,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:57:50,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:57:50,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:57:50,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 34 transitions, 180 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:50,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:50,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:57:50,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:51,141 INFO L124 PetriNetUnfolderBase]: 82/191 cut-off events. [2024-06-28 02:57:51,141 INFO L125 PetriNetUnfolderBase]: For 3953/3953 co-relation queries the response was YES. [2024-06-28 02:57:51,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 757 conditions, 191 events. 82/191 cut-off events. For 3953/3953 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 621 event pairs, 28 based on Foata normal form. 6/196 useless extension candidates. Maximal degree in co-relation 730. Up to 97 conditions per place. [2024-06-28 02:57:51,141 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 25 selfloop transitions, 11 changer transitions 11/49 dead transitions. [2024-06-28 02:57:51,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 49 transitions, 306 flow [2024-06-28 02:57:51,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:57:51,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:57:51,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 116 transitions. [2024-06-28 02:57:51,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3118279569892473 [2024-06-28 02:57:51,142 INFO L175 Difference]: Start difference. First operand has 77 places, 34 transitions, 180 flow. Second operand 12 states and 116 transitions. [2024-06-28 02:57:51,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 49 transitions, 306 flow [2024-06-28 02:57:51,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 49 transitions, 282 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-28 02:57:51,145 INFO L231 Difference]: Finished difference. Result has 72 places, 29 transitions, 158 flow [2024-06-28 02:57:51,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=158, PETRI_PLACES=72, PETRI_TRANSITIONS=29} [2024-06-28 02:57:51,145 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 42 predicate places. [2024-06-28 02:57:51,145 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 29 transitions, 158 flow [2024-06-28 02:57:51,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:51,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:51,146 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:51,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable234 [2024-06-28 02:57:51,146 INFO L420 AbstractCegarLoop]: === Iteration 236 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:51,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:51,146 INFO L85 PathProgramCache]: Analyzing trace with hash 126362026, now seen corresponding path program 24 times [2024-06-28 02:57:51,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:51,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735223949] [2024-06-28 02:57:51,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:51,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:51,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:53,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:53,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:53,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735223949] [2024-06-28 02:57:53,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735223949] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:53,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:53,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:57:53,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450051748] [2024-06-28 02:57:53,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:53,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:57:53,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:53,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:57:53,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:57:53,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:57:53,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 29 transitions, 158 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:53,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:53,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:57:53,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:53,883 INFO L124 PetriNetUnfolderBase]: 54/131 cut-off events. [2024-06-28 02:57:53,883 INFO L125 PetriNetUnfolderBase]: For 1940/1940 co-relation queries the response was YES. [2024-06-28 02:57:53,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 474 conditions, 131 events. 54/131 cut-off events. For 1940/1940 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 336 event pairs, 17 based on Foata normal form. 6/136 useless extension candidates. Maximal degree in co-relation 450. Up to 60 conditions per place. [2024-06-28 02:57:53,883 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 18 selfloop transitions, 5 changer transitions 18/43 dead transitions. [2024-06-28 02:57:53,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 43 transitions, 270 flow [2024-06-28 02:57:53,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 02:57:53,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 02:57:53,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 113 transitions. [2024-06-28 02:57:53,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30376344086021506 [2024-06-28 02:57:53,884 INFO L175 Difference]: Start difference. First operand has 72 places, 29 transitions, 158 flow. Second operand 12 states and 113 transitions. [2024-06-28 02:57:53,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 43 transitions, 270 flow [2024-06-28 02:57:53,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 43 transitions, 238 flow, removed 5 selfloop flow, removed 14 redundant places. [2024-06-28 02:57:53,886 INFO L231 Difference]: Finished difference. Result has 64 places, 22 transitions, 106 flow [2024-06-28 02:57:53,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=106, PETRI_PLACES=64, PETRI_TRANSITIONS=22} [2024-06-28 02:57:53,886 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 34 predicate places. [2024-06-28 02:57:53,886 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 22 transitions, 106 flow [2024-06-28 02:57:53,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:53,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 02:57:53,886 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:53,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable235 [2024-06-28 02:57:53,886 INFO L420 AbstractCegarLoop]: === Iteration 237 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 02:57:53,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 02:57:53,887 INFO L85 PathProgramCache]: Analyzing trace with hash 610927274, now seen corresponding path program 25 times [2024-06-28 02:57:53,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 02:57:53,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148644669] [2024-06-28 02:57:53,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 02:57:53,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 02:57:53,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 02:57:55,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 02:57:55,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 02:57:55,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148644669] [2024-06-28 02:57:55,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148644669] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 02:57:55,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 02:57:55,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 02:57:55,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606626650] [2024-06-28 02:57:55,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 02:57:55,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 02:57:55,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 02:57:55,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 02:57:55,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-06-28 02:57:55,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 02:57:55,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 22 transitions, 106 flow. Second operand has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:55,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 02:57:55,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 02:57:55,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 02:57:56,109 INFO L124 PetriNetUnfolderBase]: 27/70 cut-off events. [2024-06-28 02:57:56,109 INFO L125 PetriNetUnfolderBase]: For 594/594 co-relation queries the response was YES. [2024-06-28 02:57:56,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 198 conditions, 70 events. 27/70 cut-off events. For 594/594 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 102 event pairs, 0 based on Foata normal form. 6/75 useless extension candidates. Maximal degree in co-relation 178. Up to 32 conditions per place. [2024-06-28 02:57:56,109 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 0 selfloop transitions, 0 changer transitions 30/30 dead transitions. [2024-06-28 02:57:56,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 30 transitions, 150 flow [2024-06-28 02:57:56,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 02:57:56,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 02:57:56,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 95 transitions. [2024-06-28 02:57:56,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2785923753665689 [2024-06-28 02:57:56,110 INFO L175 Difference]: Start difference. First operand has 64 places, 22 transitions, 106 flow. Second operand 11 states and 95 transitions. [2024-06-28 02:57:56,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 30 transitions, 150 flow [2024-06-28 02:57:56,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 30 transitions, 122 flow, removed 1 selfloop flow, removed 14 redundant places. [2024-06-28 02:57:56,111 INFO L231 Difference]: Finished difference. Result has 46 places, 0 transitions, 0 flow [2024-06-28 02:57:56,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=46, PETRI_TRANSITIONS=0} [2024-06-28 02:57:56,111 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 16 predicate places. [2024-06-28 02:57:56,111 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 0 transitions, 0 flow [2024-06-28 02:57:56,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.214285714285714) internal successors, (101), 14 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 02:57:56,113 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-28 02:57:56,116 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-28 02:57:56,117 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-28 02:57:56,122 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-28 02:57:56,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236 [2024-06-28 02:57:56,122 INFO L445 BasicCegarLoop]: Path program histogram: [40, 33, 26, 25, 19, 17, 15, 10, 7, 6, 6, 6, 5, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 02:57:56,125 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-28 02:57:56,126 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-28 02:57:56,130 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-28 02:57:56,130 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-28 02:57:56,131 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.06 02:57:56 BasicIcfg [2024-06-28 02:57:56,131 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-28 02:57:56,134 INFO L158 Benchmark]: Toolchain (without parser) took 574333.96ms. Allocated memory was 165.7MB in the beginning and 1.6GB in the end (delta: 1.4GB). Free memory was 88.6MB in the beginning and 905.4MB in the end (delta: -816.8MB). Peak memory consumption was 589.0MB. Max. memory is 16.1GB. [2024-06-28 02:57:56,135 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 113.2MB. Free memory was 74.1MB in the beginning and 74.0MB in the end (delta: 81.0kB). There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 02:57:56,135 INFO L158 Benchmark]: Witness Parser took 3.91ms. Allocated memory is still 165.7MB. Free memory is still 94.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 02:57:56,135 INFO L158 Benchmark]: CACSL2BoogieTranslator took 789.88ms. Allocated memory is still 165.7MB. Free memory was 88.5MB in the beginning and 120.8MB in the end (delta: -32.3MB). Peak memory consumption was 24.0MB. Max. memory is 16.1GB. [2024-06-28 02:57:56,136 INFO L158 Benchmark]: Boogie Procedure Inliner took 73.99ms. Allocated memory is still 165.7MB. Free memory was 120.2MB in the beginning and 117.1MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-28 02:57:56,136 INFO L158 Benchmark]: Boogie Preprocessor took 65.70ms. Allocated memory is still 165.7MB. Free memory was 117.1MB in the beginning and 113.5MB in the end (delta: 3.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-28 02:57:56,136 INFO L158 Benchmark]: RCFGBuilder took 709.36ms. Allocated memory is still 165.7MB. Free memory was 113.5MB in the beginning and 55.7MB in the end (delta: 57.8MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. [2024-06-28 02:57:56,136 INFO L158 Benchmark]: TraceAbstraction took 572688.68ms. Allocated memory was 165.7MB in the beginning and 1.6GB in the end (delta: 1.4GB). Free memory was 55.2MB in the beginning and 905.4MB in the end (delta: -850.3MB). Peak memory consumption was 554.5MB. Max. memory is 16.1GB. [2024-06-28 02:57:56,137 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 113.2MB. Free memory was 74.1MB in the beginning and 74.0MB in the end (delta: 81.0kB). There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 3.91ms. Allocated memory is still 165.7MB. Free memory is still 94.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 789.88ms. Allocated memory is still 165.7MB. Free memory was 88.5MB in the beginning and 120.8MB in the end (delta: -32.3MB). Peak memory consumption was 24.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 73.99ms. Allocated memory is still 165.7MB. Free memory was 120.2MB in the beginning and 117.1MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 65.70ms. Allocated memory is still 165.7MB. Free memory was 117.1MB in the beginning and 113.5MB in the end (delta: 3.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 709.36ms. Allocated memory is still 165.7MB. Free memory was 113.5MB in the beginning and 55.7MB in the end (delta: 57.8MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. * TraceAbstraction took 572688.68ms. Allocated memory was 165.7MB in the beginning and 1.6GB in the end (delta: 1.4GB). Free memory was 55.2MB in the beginning and 905.4MB in the end (delta: -850.3MB). Peak memory consumption was 554.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 834]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 835]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 50 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 572.5s, OverallIterations: 237, TraceHistogramMax: 1, PathProgramHistogramMax: 40, EmptinessCheckTime: 0.0s, AutomataDifference: 242.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 16846 SdHoareTripleChecker+Valid, 80.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 14476 mSDsluCounter, 9947 SdHoareTripleChecker+Invalid, 69.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8954 mSDsCounter, 3986 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 121956 IncrementalHoareTripleChecker+Invalid, 125942 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3986 mSolverCounterUnsat, 993 mSDtfsCounter, 121956 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2907 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 2893 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6802 ImplicationChecksByTransitivity, 100.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3428occurred in iteration=107, InterpolantAutomatonStates: 2469, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 326.1s InterpolantComputationTime, 3957 NumberOfCodeBlocks, 3957 NumberOfCodeBlocksAsserted, 237 NumberOfCheckSat, 3720 ConstructedInterpolants, 0 QuantifiedInterpolants, 193774 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 237 InterpolantComputations, 237 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-28 02:57:56,276 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE